CMG INFORMATION SERVICES INC
8-K, 1998-04-23
DIRECT MAIL ADVERTISING SERVICES
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<PAGE>
 
                      SECURITIES AND EXCHANGE COMMISSION
                            WASHINGTON, D.C. 20549

                      ----------------------------------

                                   FORM 8-K



                                 CURRENT REPORT
                     FILED PURSUANT TO SECTION 13 OR 15(D)
                                       OF
                      THE SECURITIES EXCHANGE ACT OF 1934


        DATE OF REPORT (DATE OF EARLIEST EVENT REPORTED): APRIL 8, 1998



                         CMG INFORMATION SERVICES, INC.
             (EXACT NAME OF REGISTRANT AS SPECIFIED IN ITS CHARTER)



          DELAWARE                       0-22846                04-2921333
(STATE OR OTHER JURISDICTION     (COMMISSION FILE NUMBER)      (IRS EMPLOYER
     OF INCORPORATION)                                         IDENTIFICATION
                                                                     NO.)


100 BRICKSTONE SQUARE ANDOVER, MA                                   01810

(ADDRESS OF PRINCIPAL EXECUTIVE OFFICES)                          (ZIP CODE)

REGISTRANT'S TELEPHONE NUMBER, INCLUDING AREA CODE: (978) 684-3600

                                       1
<PAGE>
 
ITEM 2.  ACQUISITION OR DISPOSITION OF ASSETS.
- ----------------------------------------------

     On April 9, 1998, CMG Information Services, Inc. (the "Company"), a
Delaware corporation, acquired all the issued and outstanding shares of capital
stock of Accipiter, Inc. ("Accipiter"), a Delaware corporation, pursuant to a
merger of CMGI Acquisition Corporation, a Delaware corporation and wholly-owned
subsidiary of the Company, with and into Accipiter (the "Merger"), with
Accipiter becoming the surviving corporation and a wholly-owned subsidiary of
the Company. Accipiter is a Raleigh, North Carolina-based company specializing
in the development of software tools for the management of advertising over the
Internet. The acquisition was consummated pursuant to an Agreement and Plan of
Merger (the "Merger Agreement") dated April 8, 1998 among the Company, CMGI
Acquisition Corporation, Accipiter and certain stockholders of Accipiter. The
Company expects to ultimately merge Accipiter with the Company's subsidiary,
Engage Technologies, Inc.

     The acquisition will be accounted for as a purchase.  The purchase price
will be allocated to the assets acquired and liabilities assumed based on their
estimated fair values.  Results of operations for Accipiter will be included in
the Company's consolidated operating results for periods subsequent to the date
of acquisition.

     In the Merger, all outstanding shares of Common Stock and Preferred Stock
of Accipiter and vested rights to purchase Common Stock and Preferred Stock of
Accipiter were converted into approximately 632,000 shares of Common Stock, par
value $0.01 per share, of the Company (the "CMG Shares"). All unvested rights to
purchase Common Stock and Preferred Stock of Accipiter have been cancelled after
the Merger or provided for under the terms of the two escrow agreements
described below.

     The CMG Shares are not registered under the Securities Act of 1933 and are
subject to either Non-Employee Investment Representation and Lockup Letters or
Employee Investment Representation and Lockup Letters (together, the "Lockup
Agreements").  The Lockup Agreements prohibit transfer of the CMG Shares,
without the permission of the Company, for periods ranging from six to twenty-
four months.  The holders of the CMG Shares are entitled to two required
registrations under Form S-3 after six and twelve months from the date of the
Merger Agreement, as well as certain other registration rights, with respect to
CMG Shares no longer subject to the Lockup Agreements.

     Under the terms of the Merger Agreement and related Non-Employee and
Employee Stockholder Escrow Agreements, an aggregate of 91,655 of the CMG Shares
will be held in escrow for the purpose of indemnifying the Company against
certain liabilities of Accipiter and its stockholders.  Additionally, the
Employee Stockholder Escrow Agreement provides for the forfeiture to the Company
of a portion of the CMG Shares in the event that Accipiter does not meet certain
performance targets.  The Employee Stockholder Escrow Agreement and Non-Employee
Stockholder Escrow Agreement expire twelve and twenty-four months after April 8,
1998, respectively.

                                       2
<PAGE>
 
ITEM 7. FINANCIAL STATEMENTS, PRO FORMA FINANCIAL INFORMATION AND EXHIBITS.
- ---------------------------------------------------------------------------

     (A)  FINANCIAL STATEMENTS OF BUSINESS ACQUIRED

          Pursuant to the instructions to Item 7 of Form 8-K, the financial
          information required by Item 7(a) will be filed by amendment within 60
          days of the date of this filing.

     (B)  PRO FORMA FINANCIAL INFORMATION

          Pursuant to the instructions to Item 7 of Form 8-K, the financial
          information required by Item 7(b) will be filed by Amendment within 60
          days of the date of this filing.

     (C)  EXHIBITS

          2.1*  Agreement and Plan of Merger dated as of April 8, 1998 among CMG
                Information Services, Inc., CMGI Acquisition Corporation,
                Accipiter, Inc., and Certain Stockholders of Accipiter, Inc.
                Named Herein. Pursuant to Item 602 (b)(2) of Regulation S-K,
                the schedules and certain exhibits to the Agreement and Plan of
                Merger are omitted. A list of such schedules and exhibits appear
                in the table of contents to the Agreement and Plan of Merger.
                The Registrant hereby undertakes to furnish supplementally a
                copy of any omitted schedule or exhibit to the Commission upon
                request.


          2.2*  Employee Stockholder Escrow Agreement dated April 8, 1998.

          2.3   Non-Employee Stockholder Escrow Agreement dated April 8, 1998.

          2.4   Employee Investment Representation and Lockup Letters dated 
                April 8, 1998.

          2.5   Non-Employee Investment Representation and Lockup Letters dated
                April 8, 1998.

          2.6   Registration Rights Agreement dated April 8, 1998.

          *  Confidential treatment requested.

                                       3
<PAGE>
 
     Pursuant to the requirements of the Securities Exchange Act of 1934, the
Registrant has duly caused this report to be signed on its behalf by the
undersigned, thereunto duly authorized.



                                           CMG INFORMATION SERVICES, INC.
                                           (Registrant)



                                           /s/ Andrew J. Hajducky III
                                           ---------------------------
April 23, 1998                             Andrew J. Hajducky III, CPA
                                           Chief Financial Officer and Treasurer

                                       4

<PAGE>
 
                                                             Exhibit 2.1      
                                                             -----------      
                                                             **Confidential   
                                                                Treatment
                                                                Requested


 
                          AGREEMENT AND PLAN OF MERGER

                                     AMONG

                         CMG INFORMATION SERVICES, INC.
                         CMGI ACQUISITION CORPORATION,
                              ACCIPITER, INC., AND
                              CERTAIN STOCKHOLDERS
                               OF ACCIPITER, INC.
                                  NAMED HEREIN



                         _____________________________

                           Dated as of April 8, 1998
                         _____________________________































================================================================================
<PAGE>
 
                               TABLE OF CONTENTS

<TABLE>
<CAPTION>
                                                                         Page
<C>                                                                      <S>                   
SECTION 1 - THE MERGER                                                      1
     1.1    The Merger...................................................   1
     1.2    Effective Time...............................................   1
     1.3    Effects of the Merger........................................   1
     1.4    Certificate of Incorporation and Bylaws......................   1
     1.5    Directors and Officers.......................................   2
     1.6    Conversion of Stock..........................................   2
     1.7    Vested Options, Warrants and Rights..........................   3
     1.8    Unvested Options.............................................   3
     1.9    Closing of Seller Transfer Books.............................   3
     1.10   Dissenting Shares............................................   3
     1.11   Exchange of Certificates.....................................   4
     1.12   No Fractional Shares.........................................   5
     1.13   Legends......................................................   5
     1.14   Escrow of Shares.............................................   5
     1.15   No Liability.................................................   5

SECTION 2 - REPRESENTATIONS AND WARRANTIES OF SELLER.....................   6
     2.1    Organization and Qualification...............................   6
     2.2    Authority to Execute and Perform Agreements..................   6
     2.3    Capitalization and Title to Shares...........................   6
     2.4    Subsidiaries and Other Affiliates............................   7
     2.5    Financial Statements.........................................   7
     2.6    Absence of Undisclosed Liabilities...........................   7
     2.7    Intellectual Property........................................   8
     2.8    No Material Adverse Change...................................  11
     2.9    Tax Matters..................................................  12
     2.10   Compliance with Laws.........................................  13
     2.11   No Breach....................................................  13
     2.12   Actions and Proceedings......................................  13
     2.13   Contracts and Other Agreements...............................  14
     2.14   Bank Accounts and Powers of Attorney.........................  15
     2.15   Properties...................................................  15
     2.16   Customers....................................................  16
     2.17   Accounts Receivable..........................................  16
     2.18   Employee Benefit Plans.......................................  16
     2.19   Employee Relations...........................................  19
     2.20   Employment Matters...........................................  20
     2.21   Employee Conflicts...........................................  20
     2.22   Transactions with Management.................................  20
     2.23   Insurance....................................................  20
     2.24   Brokerage....................................................  21
     2.25   Hazardous Materials..........................................  21
</TABLE>

                                       i
<PAGE>
 
<TABLE> 
<S>                                                                       <C> 
     2.26  Disclosure...................................................  21

SECTION 3 - REPRESENTATIONS AND WARRANTIES OF THE
PRINCIPAL STOCKHOLDERS..................................................  22
     3.1   Authority to Execute and Perform Agreements..................  22
     3.2   No Breach....................................................  22
     3.3   Title to Shares..............................................  22
     3.4   Absence of Control...........................................  22

SECTION 4 - REPRESENTATIONS AND WARRANTIES OF
BUYER AND ACQUISITION...................................................  23
     4.1   Organization.................................................  23
     4.2   Authority to Execute and Perform Agreement...................  23
     4.3   Capitalization...............................................  23
     4.4   SEC Reports..................................................  24
     4.5   No Material Adverse Change...................................  24
     4.6   No Breach....................................................  24
     4.7   Actions and Proceedings......................................  24
     4.8   Brokerage....................................................  25
     4.9   Capitalization of Engage.....................................  25
     4.10  Disclosure...................................................  25

SECTION 5 - COVENANTS AND AGREEMENTS..................................... 25
     5.1   Conduct of Business........................................... 25
     5.2   Corporate Examinations and Investigations..................... 27
     5.3   Expenses...................................................... 27
     5.4   Authorization from Others..................................... 27
     5.5   Consummation of Agreement..................................... 28
     5.6   Public Announcements and Confidentiality...................... 28
     5.7   No Solicitation............................................... 28
     5.8   Stockholder Meeting........................................... 28
     5.9   Investment Representation and Lock-Ups........................ 29
     5.10  Voting of Seller Stock........................................ 29
     5.11  Indemnification Agreements.................................... 29
     5.12  Employment Related Agreements................................. 29
     5.13  Option and Warrant Agreements................................. 29
     5.14  Frey Agreement................................................ 29
     5.15  Buyer SEC Filings............................................. 29
     5.16  Disclosure Statements......................................... 30
     5.17  Further Assurances............................................ 30
     5.18  Franchise Taxes............................................... 30
     5.19  C/NET Warrant................................................. 30

SECTION 6 - CONDITIONS PRECEDENT TO THE OBLIGATIONS
OF EACH PARTY TO CONSUMMATE THE MERGER................................... 31
     6.1  Approvals...................................................... 31
     6.2  Absence of Order............................................... 31
</TABLE> 
                                       ii
<PAGE>
 
<TABLE> 
<S>                                                                        <C> 
SECTION 7 - CONDITIONS PRECEDENT TO THE OBLIGATIONS OF
BUYER AND ACQUISITION TO CONSUMMATE THE MERGER...........................  31
     7.1   Representations, Warranties and Covenants.....................  31
     7.2   Opinion of Counsel to Seller..................................  31
     7.3   Merger Documents..............................................  31
     7.4   Dissenting Shares.............................................  31
     7.5   Tax Opinion...................................................  31
     7.6   Stockholder Letters...........................................  32
     7.7   Escrow Agreements.............................................  32
     7.8   Stockholder Voting Agreements.................................  32
     7.9   Irrevocable Proxies...........................................  32
    7.10   Indemnification Agreements....................................  32
    7.11   Non-Disclosure, Non-Competition and Developments Agreements...  32
    7.12   Non-Disclosure and Developments Agreements....................  32
    7.13   Option and Warrant Holder Agreements..........................  32
    7.14   Frey Agreement................................................  32
    7.15   Tax Representation Letter.....................................  32
    7.16   Officer's Certificate.........................................  32
    7.17   Assistant Secretary's Certificate.............................  33
    7.18   Additional Items..............................................  33

SECTION 8 - CONDITIONS PRECEDENT TO THE OBLIGATION OF THE
SELLER AND THE PRINCIPAL STOCKHOLDERS TO CONSUMMATE THE MERGER...........  33
     8.1   Representations, Warranties and Covenants.....................  33
     8.2   Opinion of Counsel to Buyer...................................  33
     8.3   Tax Opinion...................................................  34
     8.4   Registration Rights Agreement.................................  34
     8.5   Engage Options................................................  34
     8.6   Officer's Certificate.........................................  34
     8.7   Secretary's Certificate.......................................  34
     8.8   Additional Items..............................................  34

SECTION 9 - TERMINATION, AMENDMENT AND WAIVER............................  35
     9.1   Termination...................................................  35
     9.2   Effect of Termination.........................................  35
     9.3   Termination Fee...............................................  35
     9.4   Amendment.....................................................  36
     9.5   Waiver........................................................  36

SECTION 10 - INDEMNIFICATION.............................................  37
     10.1  Survival......................................................  37
     10.2  Obligation of Employee Stockholders to Indemnify..............  37
     10.3  Obligation of Non-Employee Stockholders to Indemnify..........  37
     10.4  Obligation of the Buyer to Indemnify..........................  38
     10.5  Limitations on Indemnification................................  38
     10.6  Notice and Defense of Claims..................................  38
</TABLE> 

                                      iii
<PAGE>
 
<TABLE> 
<S>                                                                        <C> 
SECTION 11 - MISCELLANEOUS...............................................  39
     11.1   Notices......................................................  39
     11.2   Entire Agreement.............................................  40
     11.3   Governing Law................................................  40
     11.4   Binding Effect; No Assignment................................  40
     11.5   Variations in Pronouns.......................................  40
     11.6   Counterparts.................................................  40
     11.7   Disclosure Schedules.........................................  40
     11.8   Arbitration..................................................  40
     11.9   Letter Agreement.............................................  41
</TABLE>

                                       iv
<PAGE>
 
                                    EXHIBITS
 
Exhibit A       -   Form of Employee Stockholder Escrow Agreement
Exhibit B       -   Form of Non-Employee Stockholder Escrow Agreement
Exhibit C       -   Form of Employee Investment Representation and Lock-up
                    Letter
Exhibit D       -   Form of Non-Employee Investment Representation and Lock-up
                    Letter
Exhibit E       -   Form of Stockholder Voting Agreement
Exhibit F       -   Form of Irrevocable Proxy
Exhibit G       -   Form of Employee Stockholder Indemnification Agreement
Exhibit H       -   Form of Non-Employee Stockholder Indemnification Agreement
Exhibit I       -   Form of Non-Disclosure, Non-Competition and Developments
                    Agreement
Exhibit J       -   Form of Non-Disclosure and Developments Agreement
Exhibit K       -   Form of Option and Warrant Holder Acknowledgment and Release
                    Statement
Exhibit L       -   Form of Registration Rights Agreement
 
                                   SCHEDULES
 
Schedule 1.6    -   Allocation of Merger Consideration
Schedule 1.14A  -   Employee Stockholders
Schedule 1.14B  -   Non-Employee Stockholders
Schedule 5.10   -   Individuals Executing Stockholder Voting Agreements and
                    Irrevocable Proxies
Schedule 5.12   -   Employees Executing Non-Disclosure Agreements
Schedule 8.5    -   Engage Options

                                       v
<PAGE>
 
                         AGREEMENT AND PLAN OF MERGER


     THIS AGREEMENT AND PLAN OF MERGER dated as of April 8, 1998 (this
"Agreement") is among CMG Information Services, Inc (the "Buyer"), a Delaware
corporation; CMGI Acquisition Corporation ("Acquisition"), a Delaware
corporation and wholly-owned subsidiary of the Buyer; Accipiter, Inc. (the
"Seller"), a Delaware corporation; and the stockholders of the Seller identified
on the signature pages hereto (the "Principal Stockholders"). The parties wish
to effect the acquisition of the Seller by the Buyer through a merger of
Acquisition into the Seller on the terms and conditions hereof. This Agreement
is intended to be a "plan of reorganization" within the meaning of (S)368(a) of
the Internal Revenue Code of 1986, as amended (the "Code").

     Accordingly, in consideration of the mutual representations, warranties and
covenants contained herein, the parties hereto agree as follows:


                            SECTION 1 - THE MERGER

     1.1  The Merger. Upon the terms and subject to the conditions hereof, and
          ----------                                                       
in accordance with the General Corporation Law of the State of Delaware (the
"DGCL"), Acquisition shall be merged with and into the Seller (the "Merger").
The Merger shall occur at the Effective Time (as defined herein). Following the
Merger, the Seller shall continue as the surviving corporation (the "Surviving
Corporation") and be a wholly-owned subsidiary of the Buyer, and the separate
corporate existence of Acquisition shall cease.

     1.2  Effective Time. As soon as practicable after satisfaction or waiver of
          --------------                                               
all conditions to the Merger, the parties shall cause a certificate of merger
(the "Merger Certificate") to be filed and recorded in accordance with Section
251 of the DGCL and shall take all such further actions as may be required by
law to make the Merger effective. The Merger shall be effective at such time as
the Merger Certificate is filed with the Secretary of State of Delaware in
accordance with the DGCL or at such later time as is specified in the Merger
Certificate (the "Effective Time"). Immediately prior to the filing of the
Merger Certificate, a closing (the "Closing") will be held at the offices of
Palmer & Dodge LLP, One Beacon Street, Boston, Massachusetts (or such other
place as the parties may agree) for the purpose of confirming satisfaction or
waiver of all conditions to the Merger. The Closing shall take place within
three business days after the day the Merger is approved by the stockholders of
the Seller or on such other date as the parties may agree. The date on which the
Closing occurs is referred to herein as the "Closing Date".

     1.3  Effects of the Merger. The Merger shall have the effects set forth in
          ---------------------                                        
Section 261 of the DGCL.

     1.4  Certificate of Incorporation and Bylaws. The Certificate of
          ---------------------------------------                     
Incorporation and Bylaws of Acquisition, in each case as in effect immediately
prior to the Effective Time (but subject, in the case of the Certificate of
Incorporation, to such amendments as the Buyer shall
<PAGE>
 
require to be set forth in the Merger Certificate), shall be the Certificate of
Incorporation and Bylaws of the Surviving Corporation immediately after the
Effective Time.

     1.5  Directors and Officers. The directors and officers of Acquisition
          ----------------------                                
immediately prior to the Effective Time shall be the directors and officers of
the Surviving Corporation immediately after the Effective Time, each to hold
office in accordance with the Certificate of Incorporation and Bylaws of the
Surviving Corporation. The Surviving Corporation may designate such other
officers as it determines.

     1.6  Conversion of Stock.
          ------------------- 

          (a) At the Effective Time, by virtue of the Merger and without any
action on the part of the Buyer, Acquisition or the Seller:

              (i)   All shares of common stock, $.01 par value of the Seller
(the "Seller Common Stock") outstanding or deemed outstanding immediately prior
to the Effective Time, other than (A) shares held by the Seller as treasury
stock and (B) Dissenting Shares (as defined in Section 1.10), shall be converted
into and become the right to receive, in the aggregate, that number of shares
(rounded down and subject to the payment of cash for fractional shares as
provided in Section 1.12) of common stock, $.01 par value, of the Buyer ("Buyer
Common Stock") determined pursuant to Section 1.6(b) (such shares of Buyer
Common Stock are referred to hereinafter as the "Merger Consideration"). The
Merger Consideration shall be reduced by the consideration that would otherwise
be allocable pursuant to Section 1.6(c) to all Dissenting Shares if the holders
thereof had not otherwise properly exercised rights under Section 262 of the
DGCL. The Series A Preferred Stock, $.001 par value, and Series B Preferred
Stock, $.001 par value of the Seller (collectively, the "Preferred Stock"),
together with all shares of Seller Common Stock are referred to hereinafter
collectively as "Seller Stock."

              (ii)  All shares of Seller Stock held at the Effective Time by the
Seller as treasury stock shall be canceled and no payment shall be made with
respect thereto.

              (iii) All Dissenting Shares shall be handled in accordance with
Section 1.10.

              (iv)  Each share of common stock of Acquisition, $.01 par value,
outstanding immediately prior to the Effective Time shall be converted into and
become one validly issued, fully paid and nonassessable share of common stock,
$.01 par value, of the Surviving Corporation.

          (b) The Merger Consideration shall consist of 630,631 shares of Buyer
Common Stock; provided, however, 5,054 shares of the Merger Consideration shall
be reserved to satisfy the shares due upon exercise of the 1998 Tranche (as
defined in Section 5.19) of the warrant issued by the Seller to C/NET, Inc. (the
"C/NET Warrant").

          (c) The Merger Consideration shall be allocated among the holders of
shares of Seller Common Stock outstanding or deemed outstanding immediately
prior to the Effective Time by multiplying (i) the number of shares of Seller
Common Stock held or deemed held by each such holder by (ii) the Conversion
Ratio.

                                       2
<PAGE>
 
          (d) The "Conversion Ratio" means the quotient obtained by dividing the
aggregate number of shares of Buyer Common Stock delivered as the Merger
Consideration by the number of shares of Seller Common Stock outstanding or
deemed outstanding immediately prior to the Effective Time.  Such number of
shares (and the total number of such shares) is set forth for each holder of
Seller Common Stock outstanding or deemed outstanding on Schedule 1.6 attached
                                                         ------------         
hereto, which schedule also sets forth the number of whole shares of Buyer
Common Stock to be received by each such holder.  For purposes of this
Agreement, the Conversion Ratio is 0.09643722.

          (e) Shares of Seller Common Stock issuable upon conversion of a
convertible security, other than the C/NET Warrant, outstanding at the Effective
Time shall be deemed outstanding immediately prior to the Effective Time.
Shares of Seller Common Stock issuable upon exercise of vested Seller stock
options, warrants or other rights to acquire capital stock of the Seller,
outstanding at the Effective Time, reduced to reflect the exercise prices of
such options, warrants or rights, shall be deemed outstanding immediately prior
to the Effective Time.  The reduction referred to in the prior sentence shall
equal, for each holder of vested options, warrants or rights, the product of (i)
the reciprocal of the Conversion Ratio multiplied by (ii) the quotient of (x)
the aggregate exercise prices of the vested options, warrants or rights held by
such holder divided by (y) $61.20.

          (f) Schedule 1.6 also sets forth for each holder of Seller Common
              ------------                                                 
Stock outstanding or deemed outstanding the number of shares of Buyer Common
Stock due at Closing, the number of shares of Buyer Common Stock to be placed in
escrow and any cash payment due in lieu of fractional shares.

     1.7  Vested Options, Warrants and Rights. At the Effective Time, except for
          -----------------------------------                         
the C/NET Warrant, each outstanding vested Seller stock option, Seller warrant
or other right to purchase shares of capital stock of Seller shall cease to
represent a right to acquire shares of Seller Common Stock and shall be
converted into the right to receive shares of Buyer Common Stock as determined
above and set forth on Schedule 1.6.
                       ------------ 

     1.8  Unvested Options. At the Effective Time, except for the C/NET Warrant,
          ----------------                                              
each outstanding unvested Seller stock option, Seller warrant or other right to
purchase shares of capital stock of the Seller shall be cancelled and cease to
have any value.

     1.9  Closing of Seller Transfer Books. At the Effective Time, the stock
          ---------------------------------                            
transfer books of the Seller shall be closed and no transfer of Seller Stock
shall thereafter be made. If, after the Effective Time, certificates
representing shares of Seller Stock are presented to the Surviving Corporation,
they shall be canceled and exchanged for certificates representing Buyer Common
Stock.

     1.10 Dissenting Shares.
          ----------------- 

          (a) Shares of capital stock of the Seller held by a stockholder who
has properly exercised dissenters' rights with respect thereto in accordance
with Section 262 of the DGCL (collectively, the "Dissenting Shares") shall not
be converted into Merger Consideration.  From and after the Effective Time, a
stockholder who has properly exercised

                                       3
<PAGE>
 
such dissenters' rights shall no longer retain any rights of a stockholder of
the Seller or the Surviving Corporation, except those provided under the DGCL.

          (b) The Seller shall give the Buyer (i) prompt notice of any written
demands under Section 262 of the DGCL with respect to any shares of capital
stock of the Seller, any withdrawal of any such demands and any other
instruments served pursuant to the DGCL and received by the Seller and (ii) the
right to participate in all negotiations and proceedings with respect to any
demands under Section 262 with respect to any shares of capital stock of the
Seller.  The Seller shall cooperate with the Buyer concerning, and shall not,
except with the prior written consent of the Buyer, voluntarily make any payment
with respect to, or offer to settle or settle, any such demands.

     1.11 Exchange of Certificates. The Buyer shall authorize one or more
persons to act as Exchange Agent hereunder (the "Exchange Agent"). As soon as
practicable after the Effective Time, the Buyer shall, or shall cause the
Exchange Agent, to mail (i) to all former holders of record of Seller Stock, and
holders of vested options, warrants or rights to purchase Seller Stock,
instructions for surrendering their certificates representing Seller Stock,
their vested options, warrants or rights, in exchange for a certificate or
certificates representing shares of Buyer Common Stock. Upon surrender of a
Seller Stock certificate, vested option, warrant or right, for cancellation to
the Exchange Agent or to such other agent or agents as may be appointed by the
Buyer, the holder of such certificate, vested option, warrant or right shall be
entitled to receive in exchange therefor (subject to the escrow deposit required
by Section 1.14) a certificate representing that number of whole shares of Buyer
Common Stock into which the shares of Seller Stock theretofore (i) represented
by the certificate so surrendered, (ii) issuable upon conversion of the shares
of Preferred Stock represented by the certificate so surrendered, (iii) issuable
upon exercise of the vested option so surrendered or (iv) issuable upon exercise
of the vested warrants or rights so surrendered, shall have been converted
pursuant to the provisions of this Agreement, and the certificate, vested
option, warrant or right so surrendered shall forthwith be canceled. Until
surrendered in accordance with the provisions of this Section 1.11, each Seller
Stock certificate (other than each certificate for shares to be canceled in
accordance with Section 1.6(a)(ii) and each certificate for Dissenting Shares,
if any), vested option, warrant or right shall represent for all purposes shares
of Buyer Common Stock. Buyer Common Stock into which Seller Stock, vested
options, warrants and rights shall be converted in the Merger shall be deemed to
have been issued at the Effective Time. If any Buyer Common Stock certificates
are to be issued in a name other than that in which the Seller Stock certificate
surrendered is registered or in whose name the vested option, warrant or right
is held, as the case may be, it shall be a condition of such exchange that the
person requesting such exchange shall deliver to the Exchange Agent all
documents necessary to evidence and effect such transfer and shall pay to the
Exchange Agent any transfer or other taxes required by reason of the issuance of
certificates for such shares of Buyer Common Stock in such different name unless
such person can establish to the satisfaction of the Exchange Agent that such
tax has been paid or is not applicable. The letter of transmittal shall be in a
form reasonably satisfactory to the Buyer and its transfer agent.

          1.12 No Fractional Shares.  No certificates representing fractional
               --------------------                                          
shares of Buyer Common Stock shall be issued, either for delivery to the holder
or to escrow.  No fractional interest shall entitle the owner to vote or to any
rights of a security holder.  In lieu of fractional shares, each holder of
shares of Seller Stock or vested options, warrants or rights

                                       4
<PAGE>
 
who would otherwise have been entitled to a fractional share of Buyer Common
Stock, will receive an amount in cash (without interest) determined by
multiplying the applicable fraction by the Market Value of one share of Buyer
Common Stock (as defined in Section 10.2(a)).

     1.13 Legends. The shares of Seller Common Stock to be issued in the Merger
          -------                                                        
Agreement shall be characterized as "restricted securities" for purposes of Rule
144 under the Securities Act of 1933, and each certificate representing any of
such shares shall bear a legend identical or similar in effect to the following
legend (together with any other legend or legends required by applicable state
securities laws or otherwise):

          THE SECURITIES REPRESENTED HEREBY HAVE NOT BEEN REGISTERED UNDER THE
          SECURITIES ACT OF 1933, AS AMENDED, OR ANY STATE SECURITIES LAW, AND
          MAY NOT BE OFFERED, SOLD, TRANSFERRED OR OTHERWISE DISPOSED OF UNLESS
          REGISTERED UNDER THE SECURITIES ACT OF 1933, AS AMENDED, AND ANY
          APPLICABLE STATE SECURITIES LAWS, OR AN EXEMPTION FROM SUCH
          REGISTRATION IS AVAILABLE.  THESE SECURITIES ARE ALSO SUBJECT TO AN
          INVESTMENT REPRESENTATION AND LOCKUP AGREEMENT WITH THE CORPORATION
          WHICH RESTRICTS THE TRANSFER THEREOF, A COPY OF WHICH CAN BE OBTAINED
          FROM THE CORPORATION AT ITS EXECUTIVE OFFICES.

     1.14 Escrow of Shares.  At the Effective Time, the Buyer shall deposit:
          ----------------                                                  

          (a) 20% of the total number of shares comprising the Merger
Consideration payable to the individuals listed on Schedule 1.14A (the "Employee
                                                   --------------               
Stockholders") with an escrow agent reasonably satisfactory to the Seller to be
held and disbursed by such agent in accordance with the form escrow agreement
attached hereto as Exhibit A (the "Employee Stockholder Escrow Agreement"); and
                   ---------                                                   

          (b) 10% of the total number of shares comprising the Merger
Consideration payable to individuals listed on Schedule 1.14B (the "Non-Employee
                                               --------------                   
Stockholders") with an escrow agent reasonably satisfactory to the Seller to be
held and disbursed by such agent in accordance with the form of escrow agreement
attached hereto as Exhibit B (the "Non-Employee Stockholder Escrow Agreement"
                   ---------                                                 
and together with the Employee Stockholder Escrow Agreement, the "Escrow
Agreements").

     1.15 No Liability.  Notwithstanding any other provision of this Agreement,
          ------------                                                         
neither the Exchange Agent, the Buyer or the Surviving Corporation shall be
liable for any amount paid to a public official pursuant to any applicable
abandoned property, escheat or similar law.

             SECTION 2 - REPRESENTATIONS AND WARRANTIES OF SELLER

     Except as set forth on the disclosure schedule delivered to the Buyer on
the date hereof (the "Seller Disclosure Schedule"), the section numbers of which
are numbered to correspond

                                       5
<PAGE>
 
to the section numbers of this Agreement to which they refer, the Seller
represents and warrants to the Buyer and Acquisition as set forth below:

     2.1  Organization and Qualification.
          ------------------------------ 

          (a) The Seller is a corporation duly organized, validly existing and
in good standing under the laws of Delaware with full corporate or other power
and authority to own, lease and operate its assets and properties and to carry
on its business as now being and as heretofore conducted.  The Seller is
qualified or otherwise authorized to transact business as a foreign corporation
or other legal entity in all jurisdictions in which such qualification or
authorization is required by law, except for jurisdictions in which the failure
to be so qualified or authorized could not have a material adverse effect on the
assets, properties, business, prospects, results of operations or financial
condition of the Seller (the "Business of Seller").

          (b) The Seller has previously provided to the Buyer true and complete
copies of the charter and bylaws or other governing instruments of the Seller as
presently in effect, and the Seller is not in default in the performance,
observation or fulfillment of its charter or bylaws or other governing
instruments.  The minute books of the Seller contain true and complete records
of all meetings and consents in lieu of meetings of the Board of Directors (and
any committees thereof) and of the stockholders since the time of Seller's
incorporation and accurately reflect in all material respects all transactions
referred to in such minutes and consents in lieu of meetings.  The stock books
of the Seller are true and complete.

     2.2  Authority to Execute and Perform Agreements.  The Seller has the
          -------------------------------------------                     
corporate power and authority to enter into, execute and deliver this Agreement
and, subject to the approval of this Agreement by the Seller's stockholders, to
perform fully its obligations hereunder.  The execution and delivery of this
Agreement and the consummation of the transactions contemplated hereby have been
duly authorized by the Board of Directors of the Seller.  No action on the part
of the Seller other than approval by the stockholders of the Seller is necessary
to consummate the transactions contemplated hereby.  This Agreement has been
duly executed and delivered by the Seller and, subject to the foregoing,
constitutes a valid and binding obligation of the Seller, enforceable in
accordance with its terms.

     2.3  Capitalization and Title to Shares.
          ---------------------------------- 

          (a) The Seller is authorized to issue 8,000,000 shares of Common
Stock, of which 1,950,380 shares are issued and outstanding, and 4,250,000
shares of Preferred Stock issuable in series.  Of such Preferred Stock,
1,735,299 shares have been designated Series A, of which 1,424,940 shares are
issued and outstanding; and 2,514,701 shares have been designated as Series B,
of which 2,189,383 shares are issued and outstanding.  Such shares are owned of
record by the persons and in the amounts set forth on the Seller Disclosure
Schedule.  No other class of capital stock of the Seller is authorized or
outstanding.  All of the issued and outstanding shares of the Seller's capital
stock are duly authorized and are validly issued, fully paid, nonassessable and
free of pre-emptive rights.  None of the issued and outstanding shares of the
Seller have been issued in violation of any federal or state law or any
preemptive rights or rights to subscribe for or purchase securities.

                                       6
<PAGE>
 
          (b) The Seller Disclosure Schedule includes a true and complete list
of all outstanding rights, subscriptions, warrants, calls, preemptive rights,
options or other agreements of any kind to purchase or otherwise receive from
the Seller any shares of the capital stock or any other security of the Seller,
and all outstanding securities of any kind convertible into or exchangeable for
such securities.  True and complete copies of all instruments (or the forms of
such instruments) referred to in this Section 2.3(b) have been previously
furnished to the Buyer.  There are no shareholder agreements, voting trusts,
proxies or other agreements, instruments or understandings with respect to the
outstanding shares of capital stock of the Seller to which the Seller is a
party.

          (c) The Seller does not own beneficially any shares of capital stock
of the Buyer.

     2.4  Subsidiaries and Other Affiliates.
          --------------------------------- 

          (a) The Seller has no Subsidiaries except as set out in the Seller
Disclosure Schedule.  As used in this Agreement, "Subsidiary" means any
corporation or other legal entity of which the Seller or any Subsidiary owns,
directly or indirectly, stock or other equity interests.

          (b) The Seller is not a party to a partnership or joint venture with
any other person except as set out in the Seller Disclosure Schedule.

     2.5  Financial Statements.  The Seller has previously delivered to the
          --------------------                                             
Buyer (a) the audited consolidated financial statements of the Seller at
December 31, 1997 and for the two years then ended (including the footnotes
thereto) (the "Audited Financial Statements"), (b) the unaudited balance sheets
of the Seller as at March 31, June 30 and September 30, 1997 and 1996, as
available, and related statements of operations and cash flows for the periods
then ended (the "Interim Financial Statements").  All of such financial
statements referred to in this section are collectively referred to herein as
the "Seller Financial Statements."  The Seller Financial Statements have been
prepared from, and are in accordance with, the books and records of the Seller
and present fairly the financial position and the results of operations of the
Seller as of the dates and for the periods indicated, in each case in accordance
with generally accepted accounting principles ("GAAP") consistently applied
throughout the periods involved except as otherwise stated therein, and subject,
in the case of the Interim Financial Statements, to normal year end audit
adjustments, which are not, in the aggregate, material and subject to the
addition of appropriate notes to the Interim Financial Statements.

     2.6  Absence of Undisclosed Liabilities.  As of December 31, 1997, the
          ----------------------------------                               
Seller had no liabilities of any nature, whether accrued, absolute, contingent
or otherwise (including, without limitation, liabilities as guarantor or
otherwise with respect to obligations of others or liabilities for taxes due or
then accrued or to become due), required to be reflected or disclosed in the
December 31, 1997 balance sheet included in the Audited Financial Statements
that were not adequately reflected or reserved against on such balance sheet.
The Seller has no such liabilities other than liabilities (a) adequately
reflected or reserved against on the December 31, 1997 balance sheet included in
the Audited Financial Statements, (b) incurred since December 31, 1997 in the
ordinary course of business, (c) disclosed in this

                                       7
<PAGE>
 
Agreement or (d) that could not, in the aggregate, have a material adverse
effect on the Business of Seller.

     2.7  Intellectual Property
          ---------------------

          (a) Seller Intellectual Property.  All patents, trademarks, trade
              ----------------------------                                 
names, service marks, trade dress, Internet domain names, copyrights and any
renewal rights therefor, mask works, net lists, schematics, technology,
manufacturing processes, supplier lists, trade secrets, know-how, moral rights,
computer software programs or applications (in both source and object code form)
("Software Programs"), technical documentation of the Software Programs
("Technical Documentation"), registrations and applications for any of the
foregoing and all other tangible or intangible proprietary information or
materials that are or have been used in (including without limitation in the
development of) the Seller's business and/or in any product, technology or
process (i) currently being or formerly manufactured, published or marketed by
the Seller or (ii) previously or currently under development for possible future
manufacturing, publication, marketing or other use by the Seller are hereinafter
referred to as the "Seller Intellectual Property."

          (b) Applications and Registrations.  The Seller Disclosure Schedule
              ------------------------------                                 
contains a true and complete list of all of the Seller's patents, patent
applications, trademarks, trademark applications, trade names, service marks,
service mark applications, Internet domain names, Internet domain name
applications, copyrights and copyright registrations and applications and other
filings and formal actions made or taken pursuant to federal, state, local and
foreign laws by the Seller to protect its interests in the Seller Intellectual
Property.

          (c) Rights to Seller Intellectual Property.  The Seller Intellectual
              --------------------------------------                          
Property consists solely of items and rights which are: (i) owned by the Seller;
(ii) in the public domain; or (iii) rightfully used by the Seller and its
successors pursuant to a valid license.  The Seller has all rights in the Seller
Intellectual Property necessary to carry out the Seller's current, former and
anticipated activities, including without limitation, to the extent required to
carry out such activities, rights to make, use, exclude others from using,
reproduce, modify, adapt, create derivative works based on, translate,
distribute (directly and indirectly), transmit, display and perform publicly,
license, rent, lease, assign and sell the Seller Intellectual Property in all
geographic locations and fields of use, and to sublicense any or all such rights
to third parties, including the right to grant further sublicenses.

          (d) Third Party Claims.  Reproduction, manufacturing, distribution,
              ------------------                                             
licensing, sublicensing, sale or any other exercise of rights in any Seller
Intellectual Property, product, work, technology or process as now used or
offered or proposed for use, licensing or sale by the Seller does not infringe
on any copyright, trade secret, trademark, service mark, trade name, trade
dress, firm name, Internet domain name, logo, trade dress, mask work or moral
right of any person or, to the best of the Seller's knowledge, the patent of any
person; provided that with respect to the third-party software listed in Section
2.7(j) of the Seller Disclosure Schedule, the foregoing shall apply only to the
best of the Seller's knowledge.  No claims (i) challenging the validity,
effectiveness or ownership by the Seller of any of the Seller Intellectual
Property, or (ii) to the effect that the use, distribution, licensing,
sublicensing, sale or any other exercise of rights in any product, work,
technology or process as now used or offered or proposed for use, licensing,
sublicensing or sale by the Seller infringes or will

                                       8
<PAGE>
 
infringe on any intellectual property or other proprietary right of any person
have been asserted or, to the knowledge of Seller, are threatened by any person,
nor are there any valid grounds for any bona fide claim of any such kind;
provided that with respect to the third-party software listed in Section 2.7(j)
of the Seller Disclosure Schedule, the foregoing shall apply only to the best of
the Seller's knowledge.  All registered, granted or issued patents, mask works,
trademarks, Internet domain names and copyright held by the Seller are valid,
enforceable and subsisting.  To the best of Seller's knowledge, there is no
unauthorized use, infringement or misappropriation of any of the Seller
Intellectual Property by any third party, employee or former employee.

          (e) Royalties.  Except as set forth on the Seller Disclosure Schedule,
              ---------                                                         
there are no royalties, fees, honoraria or other payments payable by the Seller
to any person or entity by reason of the ownership, development, use, license,
sale or disposition of the Seller Intellectual Property, other than salaries and
sales commissions paid to employees and sales agents in the ordinary course of
business.

          (f) Personnel.  All personnel, including employees, agents,
              ---------                                              
consultants and contractors, who have contributed to or participated in the
conception and development of the Seller Intellectual Property on behalf of the
Seller have executed nondisclosure agreements in the form set forth on the
Seller Disclosure Schedule and either (i) have been a party to a "work-for-hire"
arrangement or agreements with the Seller in accordance with applicable national
and state law that has accorded the Seller full, effective, exclusive and
original ownership of all tangible and intangible property thereby arising, or
(ii) have executed appropriate instruments of assignment in favor or the Seller
as assignee that have conveyed to the Seller effective and exclusive ownership
of all tangible and intangible property thereby arising.

          (g) Third Party Agreements.  The Seller is not, nor as a result of the
              ----------------------                                            
execution or delivery of this Agreement, or performance of the Seller's
obligations hereunder, will Seller be, in violation of any license, sublicense,
agreement or instrument to which the Seller is a party or otherwise bound, nor
will execution or delivery of this Agreement, or performance of Seller's
obligations hereunder, cause the diminution, termination or forfeiture of any
Seller Intellectual Property.

          (h) Seller Software Programs.  The Seller Disclosure Schedule contains
              ------------------------                                          
a true and complete list of all of Seller's Software Programs.  The Seller owns
full and unencumbered right and good, valid and marketable title to such
Software Programs free and clear of all mortgages, pledges, liens, security
interests, conditional sales agreements, encumbrances or charges of any kind
except for liens described in Section 2.15.

          (i) Protection.  The Seller has enforced the trade secret protection
              ----------                                                      
program set forth in the Seller Disclosure Schedule.  To the best of Seller's
knowledge, there has been no violation of such program by any person or entity.
The source code and system documentation relating to the Software Programs (i)
have at all times been maintained in strict confidence, (ii) have been disclosed
by the Seller only to employees who have had a "need to know" the contents
thereof in connection with the performance of their duties to the Seller and who
have executed the nondisclosure agreements referred to in Section 2.7(f), and
(iii) have not been disclosed to any third party.

                                       9
<PAGE>
 
          (j) Third-Party Software.  The Seller Disclosure Schedule contains a
              --------------------                                            
complete list of (i) material software libraries, compilers and other third-
party software used in the development of the Software Programs and (ii)
material software systems and applications used by the Seller in the operation
of its business.  The Seller Disclosure Schedule lists all license agreements
for the use of all such software and, if any such software is not licensed, the
basis of the use of such software by the Seller.  All use of each of such
software product by the Seller has been in full compliance with the respective
license agreement or other right of use listed on the Seller Disclosure
Schedule.

          (k) Software Performance.  The Software Programs will perform in
              --------------------                                        
accordance with the warranties set forth in the standard end-user license
agreements listed on the Seller Disclosure Schedule (the "License Agreement").

          (l) Integrity.  Except with respect to demonstration or trial copies,
              ---------                                                        
no portion of any Software Program contains or will contain any "back door,"
"time bomb," "Trojan horse," "worm," "drop dead device," "virus" or other
software routines or hardware components designed to permit unauthorized access;
to disable or erase software, hardware, or data; or to perform any other such
actions.

          (m) Contract Performance.  The Seller has observed all material
              --------------------                                       
provisions of, and performed all of their material obligations under, the
License Agreement, including, but not limited to, the performance of its product
maintenance obligations.  The Seller has not taken any action that could cause,
or failed to take any action, except that Seller has not filed any copyright
registrations or patent applications with respect to the Seller Intellectual
Property, the failure of which could cause, (i) any source code, trade secret or
other Seller Intellectual Property to be released from an escrow or otherwise
made available to any person or entity other than those persons described in
Section 2.7(i), dedicated to the public or otherwise placed in the public domain
or (ii) any other adverse affect to the protection of the Software Programs
under trade secret, copyright, patent or other intellectual property laws.

          (n) Year 2000.  The Software Programs (i) have been designed to ensure
              ---------                                                         
year 2000 compatibility, which shall include, but is not limited to, date data
century recognition, and calculations that accommodate same century and multi-
century formulas and date values; (ii) operate and will operate in accordance
with their specifications prior to, during and after the calendar year 2000
A.D.; and (iii) shall not end abnormally or provide invalid or incorrect results
as a result of date data, specifically including date data which represents or
references different centuries or more than one century; provided, however, that
the Seller makes no representations concerning any website or operating system
of a customer using the Software Programs.

          (o) Adequacy of Technical Documentation.  The Technical Documentation
              -----------------------------------                              
includes the source code (with comments) for all Software Programs, as well as
any pertinent comments by or explanation that may be necessary to render such
materials understandable and usable to a person ordinarily skilled in such
matters.  The Technical Documentation also includes any programs (including
compilers), "workbenches," tools and higher level (or "proprietary") languages
necessary for the development, maintenance and implementation of the Software
Programs.

                                       10
<PAGE>
 
     2.8  No Material Adverse Change.  Since December 31, 1997, there has not
          --------------------------                                         
been:

          (a) any material adverse change in the Business of Seller;

          (b) any transaction, commitment, contract or agreement entered into by
the Seller or any relinquishment by the Seller of any contract or other right
having a value of or involving aggregate payments in excess of $50,000;

          (c) any redemption or other acquisition of any capital stock of the
Seller or any declaration, setting aside, or payment of any dividend or
distribution of any kind with respect to any shares of capital stock of the
Seller;

          (d) any increase in compensation, bonus or other benefits payable or
to become payable by the Seller to any of their respective directors, officers
or employees, other than regularly scheduled increases in the ordinary course of
business;

          (e) any entering into or granting by the Seller of any new employment
agreement providing for annual compensation over $100,000, any new employee
benefit, deferred compensation or other similar employee benefit arrangement, or
any new consulting arrangement providing for annual compensation over $100,000
and any grant of any severance or termination rights to any director, officer or
employee of the Seller or any increase in benefits payable under existing
severance or termination pay policies or employment agreements;

          (f) any change in any accounting method or practice followed by the
Seller;

          (g) any making by the Seller of any loan or advance to any
stockholder, officer, director or consultant (other than expense advances made
in the ordinary course of business), or any other loan or advance otherwise than
in the ordinary course of business;

          (h) except for inventory or equipment acquired in the ordinary course
of business, any acquisition by the Seller of all or any part of the assets,
properties, capital stock or business of any other person;

          (i) any destruction of, damage to or loss of any assets material to
the Business of Seller (whether or not covered by insurance);

          (j) a material adverse change in a customer relationship including,
without limitation, the following to the extent inconsistent with the Seller's
past results:  any cancellation or termination or actual notice of cancellation
or termination by any customer of its relationship or a material portion of its
relationship with Seller or any material decrease or planned decrease in the
usage or purchase of the products or services of Seller by any such customer;

          (k) labor trouble or claim of wrongful discharge or other unlawful
labor practice or action;

          (l) any litigation commenced by or against the Seller;

                                       11
<PAGE>
 
          (m) except in the ordinary course of business, any sale, abandonment
or any other disposition of any of the Seller's assets or properties; or

          (n) any commitment, understanding or agreement by Seller or any of its
directors, officers or employees to do any of the things described in the
preceding clauses (a) through (m).

     2.9  Tax Matters.
          ----------- 

          (a) The Seller has filed all tax reports and returns required to be
filed by it and paid or will timely pay all taxes and other charges shown as due
on such reports and returns.  The Seller is not delinquent in the payment of any
material tax assessment or other governmental charge (including without
limitation applicable withholding taxes).  Any provision for taxes reflected in
the Audited Financial Statements is adequate for payment of any and all tax
liabilities for periods ending on or before December 31, 1997 and there are no
tax liens on any assets of the Seller except liens for current taxes not yet
due.

          (b) There has not been any audit of any tax return filed by the Seller
and no audit of any such tax return is in progress and the Seller has not been
notified by any tax authority that any such audit is contemplated or pending.
The Seller knows of no tax deficiency or claim for additional taxes asserted or
threatened to be asserted against it by any taxing authority and the Seller
knows of no grounds for any such assessment.  No extension of time with respect
to any date on which a tax return was or is to be filed by the Seller is in
force, and no waiver or agreement by the Seller is in force for the extension of
time for the assessment or payment of any tax.  For purposes of this Agreement,
the term "tax" includes all federal, state, local and foreign taxes or
assessments, including income, sales, gross receipts, excise, use, value added,
royalty, franchise, payroll, withholding, property and import taxes and any
interest or penalties applicable thereto.

          (c) The Seller has not agreed to, and is not required to, make any
adjustments under Section 481(a) of the Code by reason of a change in accounting
method or otherwise.

          (d) The Seller is not and has never been a member of a consolidated
group or combined group of corporations.

          (e) There has been no change in ownership of the Seller that would
limit the Buyer's ability to utilize the net operating losses of the Seller.

     2.10 Compliance with Laws.
          -------------------- 

          (a) The Seller has all licenses, permits, franchises, orders or
approvals of any federal, state, local or foreign governmental or regulatory
body material to the conduct of its respective business (collectively,
"Permits"); such Permits are in full force and effect; and no proceeding is
pending or, to the best knowledge of the Seller, threatened to revoke or limit
any Permit.  The Seller Disclosure Schedule contains a true and complete list of
all Permits.

                                       12
<PAGE>
 
          (b) The Seller is not in violation of any applicable law, ordinance or
regulation or any order, judgment, injunction, decree or other requirement of
any court, arbitrator or governmental or regulatory body, except for violations
that could not, in the aggregate, have a material adverse effect on the Business
of Seller.  Since its organization, the Seller has not received notice of, and
there has not been any citation, fine or penalty imposed against the Seller for,
any such violation or alleged violation.

     2.11 No Breach.  Except for the filing of the Merger Certificate with the
          ---------                                                           
Secretary of State of the State of Delaware, the execution, delivery and
performance of this Agreement by the Seller and the consummation by the Seller
of the transactions contemplated hereby will not (a) violate any provision of
the Certificate of Incorporation or Bylaws of the Seller; (b)  violate, conflict
with or result in the breach of any of the terms or conditions of, result in
modification of the effect of, or otherwise give any other contracting party the
right to terminate, or constitute (or with notice or lapse of time or both
constitute) a default under, any instrument, contract or other agreement to
which the Seller is a party or to which it or its assets or properties is bound
or subject; (c) violate any law, ordinance or regulation or any order, judgment,
injunction, decree or other requirement of any court, arbitrator or governmental
or regulatory body applicable to the Seller or by which any of Seller's assets,
properties or securities is bound; (d) violate any Permit; (e) require any
filing with, notice to, or permit, consent or approval of, any other
governmental or regulatory body; or (f) result in the creation of any lien or
other encumbrance on the assets, properties or securities of the Seller,
excluding from the foregoing clauses (b), (c), (d), (e) and (f) exceptions to
the foregoing that, in the aggregate, could not have a material adverse effect
on the Business of Seller or on the ability of the Seller to consummate the
transactions contemplated hereby.

     2.12 Actions and Proceedings.  There are no outstanding orders, awards,
          -----------------------                                           
judgments, injunctions, decrees or other requirements of any court, arbitrator
or governmental or regulatory body against the Seller or any of its securities,
assets or properties.  There are no actions, suits, investigations or claims or
legal, administrative or arbitration proceedings pending or, to the best
knowledge of the Seller, threatened against the Seller that in the aggregate
could have a material adverse effect upon the transactions contemplated hereby
or the Business of Seller.  To the best knowledge of the Seller, there is no
fact, event or circumstance now in existence that reasonably could be expected
to give rise to any action, suit, claim, proceeding or investigation that
individually or in the aggregate would have a material adverse effect upon the
transactions contemplated hereby or on the Business of Seller.

     2.13 Contracts and Other Agreements.  The Seller Disclosure Schedule sets
          ------------------------------                                      
forth a list of the following contracts and other agreements to which the Seller
is a party or by or to which any it or its assets or properties are bound or
subject:

          (a) any agreement or series of related agreements requiring aggregate
payments by or to the Seller of more than $50,000;

          (b) any agreement with or for the benefit of any current or former
officer, director, shareholder, employee or consultant of the Seller;

          (c) any agreement with any labor union or association representing any
employee of the Seller;

                                       13
<PAGE>
 
          (d) any agreement for the purchase or sale of materials, supplies,
equipment, merchandise or services that contain an escalation, renegotiation or
redetermination clause or that obligate the Seller to purchase all or
substantially all of its requirements of a particular product or service from a
supplier, or for periodic minimum purchases of a particular product or service
from a supplier;

          (e) any agreement for the sale of any of the assets or properties of
the Seller other than in the ordinary course of business or for the grant to any
person of any options, rights of first refusal, or preferential or similar
rights to purchase any such assets or properties;

          (f) any partnership or joint venture agreement excluding co-marketing
agreements;

          (g) any agreement of surety, guarantee or indemnification, other than
agreements in the ordinary course of business with respect to obligations in an
aggregate amount not in excess of $50,000;

          (h) any agreement containing covenants of the Seller not to compete in
any line of business, in any geographic area or with any person or covenants of
any other person not to compete with the Seller or in any line of business of
the Seller;

          (i) any agreement granting or restricting the right of the Seller to
use any Intellectual Property other than license agreements entered into in the
ordinary course of business;

          (j) any agreement with customers or suppliers for the sharing of fees,
the rebating of charges or other similar arrangements;

          (k) any agreement with any holder of securities of the Seller as such
(including, without limitation, any agreement containing an obligation to
register any of such securities under any federal or state securities laws);

          (l) any agreement obligating the Seller to deliver services or product
enhancements or containing a "most favored nation" pricing clause;

          (m) any agreement relating to the acquisition by the Seller of any
operating business or the capital stock of any other person;

          (n) any agreement requiring the payment to any person of a brokerage
or sales commission or a finder's or referral fee (other than arrangements to
pay commissions or fees to employees in the ordinary course of business);

          (o) any agreement or note relating to or evidencing outstanding
indebtedness for borrowed money;

          (p) any lease, sublease or other agreement under which the Seller is
lessor or lessee of any real property or equipment or other tangible property;

                                       14
<PAGE>
 
          (q) any agreement with a change of control provision or otherwise
requiring consent with respect to the Merger;

          (r) any stock option agreement; restricted stock agreement; employment
or severance agreement; phantom stock plan; bonus, incentive or similar
agreement, arrangement or understanding;

          (s) any distribution or sales representative agreement or agreements
appointing any agents; and

          (t) any other material agreement whether or not made in the ordinary
course of business.

True and complete copies of all the contracts and other agreements (and all
amendments, waivers or other modifications thereto) set forth on the Seller
Disclosure Schedule have been furnished to the Buyer.  Each of such contracts is
valid, subsisting, in full force and effect, binding upon the Seller, and to the
best knowledge of the Seller, binding upon the other parties thereto in
accordance with their terms, and the Seller is not in default under any of them,
nor, to the best knowledge of the Seller, is any other party to any such
contract or other agreement in default thereunder, nor does any condition exist
that with notice or lapse of time or both would constitute a default thereunder,
except, in each case, such defaults as could not, in the aggregate, have a
material adverse effect on the Business of Seller.

     2.14 Bank Accounts and Powers of Attorney.  The Seller Disclosure Schedule
          ------------------------------------                                 
identifies all bank and brokerage accounts of the Seller, whether or not such
accounts are held in the name of the Seller, lists the respective signatories
therefor and lists the names of all persons holding a power of attorney from the
Seller and a summary of the terms thereof.

     2.15 Properties.
          ---------- 

          (a) The Seller owns and has good title to all of its assets and
properties reflected as owned on the December 31, 1997 balance sheet included in
the Audited Financial Statements, free and clear of any lien, claim or other
encumbrance, except for (i) assets and properties disposed of, or subject to
purchase or sales orders, in the ordinary course of business since December 31,
1997, (ii) liens or other encumbrances securing the liens of materialmen,
carriers, landlords and like persons, all of which are not yet due and payable,
(iii) liens for taxes not yet delinquent and (iv) liens, claims or other
encumbrances that, in the aggregate, are not material to the Business of Seller.

          (b) The Seller does not own any real property and does not have any
options or contractual obligations to purchase or acquire any interest in real
property.  The Seller has a valid leasehold interest in all of the buildings,
structures and leasehold improvements, and owns or has a valid leasehold
interest in all equipment and other tangible property material to the conduct of
its business, all of which are in good and sufficient operating condition and
repair, ordinary wear and tear excepted.  There is no equipment located on the
premises of the Seller that is on loan from another party.

                                       15
<PAGE>
 
     2.16 Customers.  The Seller Disclosure Schedule sets forth the 25 customers
          ---------                                                             
who accounted for the largest sales of the Seller during 1997 (the "Customers").
The relationships of the Seller with the Customers are good commercial working
relationships.  No Customer has canceled or otherwise terminated its
relationship with the Seller or has decreased materially its usage or purchase
of the services of the Seller.  The Seller does not know of any plan or
intention of any Customer, and has not received any written threat or notice
from any Customer, to terminate, cancel or otherwise materially and adversely
modify its relationship with the Seller or to decrease materially or limit its
usage or purchase of the services or products of the Seller.

     2.17 Accounts Receivable.  Subject to the allowances with respect to
          -------------------                                            
accounts receivable set forth on the December 31, 1997 balance sheet included
with the Audited Financial Statements, all accounts receivable reflected on such
balance sheet and all accounts receivable arising subsequent thereto, have
arisen in the ordinary course of business of the Seller, represent valid and
enforceable obligations due to the Seller and have been and are subject to no
set-off, counterclaim or future performance obligation on the part of the
Seller.

     2.18 Employee Benefit Plans.
          ---------------------- 

          (a)  Definitions The following terms shall have the meanings set forth
               -----------      
below:

               (i)   "Affiliate" shall mean any other person or entity
controlled by or under common control with Seller within the meaning of Section
414(b), (c), (m) or (o) of the Code and the regulations thereunder;

               (ii)  "ERISA" shall mean the Employee Retirement Income Security
Act of 1974, as amended;

               (iii) "Seller Employee Plan" shall refer to any plan, program,
policy, practice, contract, agreement or other arrangement providing for
compensation, deferred compensation, incentive compensation, severance,
termination pay, performance awards, stock or stock-related awards, fringe
benefits or other employee benefits or remuneration of any kind, whether formal
or informal, funded or unfunded and whether or not legally binding, including
without limitation, each "employee benefit plan", within the meaning of Section
3(3) of ERISA that is or has been maintained, contributed to, or required to be
contributed to, by Seller or any Affiliate for the benefit of any "Employee" (as
defined below), and pursuant to which Seller or any Affiliate has or may have
any material liability contingent or otherwise;

               (iv)  "Employee" shall mean any current, former, or retired
employee, officer, or director of Seller or any Affiliate;

               (v)   "Employee Agreement" shall refer to each management,
employment, severance, consulting, relocation, repatriation, expatriation,
visas, work permit or similar agreement or contract between Seller or any
Affiliate and any Employee or consultant;

               (vi)  "IRS" shall mean the Internal Revenue Service;

                                       16
<PAGE>
 
               (vii)  "Multiemployer Plan" shall mean any "Pension Plan" (as
defined below) that is a "multiemployer plan" as defined in Section 3(37) of
ERISA; and

               (viii) "Pension Plan" shall refer to each Seller Employee Plan
that is an "employee pension benefit plan" within the meaning of Section 3(2) of
ERISA.

          (b)  Schedule.  The Seller Disclosure Schedule contains an accurate
               --------  
and complete list of each Seller Employee Plan and each Employee Agreement.
Except as may be set forth on the Seller Disclosure Schedule, neither Seller nor
any Affiliate has any plan or commitment, whether legally binding or not, to
establish any new Seller Employee Plan or Employee Agreement, to modify any
Seller Employee Plan or Employee Agreement (except to the extent required by law
or to conform any such Seller Employee Plan or Employee Agreement to the
requirements of any applicable law, in each case as previously disclosed to
Buyer in writing, or as required by this Agreement), or to enter into any Seller
Employee Plan or Employee Agreement.

          (c)  Documents.  Seller has provided or made available to Buyer true
               ---------                                                      
and complete copies of (i) all documents comprising each written Seller Employee
Plan and each Employment Agreement, including all amendments thereof and any
trust agreements, insurance contracts, and other funding agreements; (ii) the
three most recent annual reports (Series 5500 and all schedules thereto), if
any, required under ERISA or the Code in connection with each Seller Employee
Plan or related trust; (iii) the most recent actuarial reports prepared for each
of the Seller Employee Plans for which such report is required or was prepared
and the most recent certified financial statements for each of the Seller
Employee Plans for which such report is required or was prepared; (iv) the most
recent summary plan description together with the most recent summary of
material modifications, if any, required under ERISA with respect to each Seller
Employee Plan; (v) all IRS determination letters and rulings relating to Seller
Employee Plans and copies of all applications and correspondence to or from the
IRS or the Department of Labor ("DOL") with respect to any Seller Employee Plan;
(vi) all communications material to any Employee or Employees relating to any
Seller Employee Plan and any proposed Seller Employee Plans, in each case,
relating to any amendments, terminations, establishments, increases or decreases
in benefits, acceleration of payments or vesting schedules or other events which
would result in any material liability to Seller or any Affiliate; and (vii) all
registration statements and prospectuses prepared in connection with each Seller
Employee Plan.

          (d)  Employee Plan Compliance. Seller and each Affiliate has performed
               ------------------------    
in all material respects all obligations required to be performed by it under
each Seller Employee Plan, and each Seller Employee Plan has been established
and maintained in all material respects in accordance with its terms and in
compliance with all applicable laws, statutes, orders, rules and regulations,
including but not limited to ERISA or the Code; (ii) no "prohibited
transaction," within the meaning of Section 4975 of the Code or Section 406 of
ERISA, has occurred with respect to any Seller Employee Plan for which no
exemption exists under Section 4975(c) or (d) of the Code or Section 408 of
ERISA that would have a material adverse effect on the Business of Seller; (iii)
there are no actions, suits or claims pending, or, to the knowledge of Seller,
threatened or anticipated (other than routine claims for benefits or actions
seeking qualified domestic relations orders) against any Seller Employee Plan or
against the assets of any Seller Employee Plan; (iv) each Seller Employee Plan
can be

                                       17
<PAGE>
 
amended, terminated or otherwise discontinued after the Effective Time in
accordance with its terms, without liability to Seller, the Surviving
Corporation or any of its Affiliates (other than for ordinary administration
expenses typically incurred in a termination event and benefits accrued through
the effective date of such amendment, termination or discontinuance not
materially in excess of those provided for in the Audited Financial Statements);
(v) there are no inquiries or proceedings pending or, to the knowledge of Seller
or any affiliates, threatened by the IRS or DOL with respect to any Seller
Employee Plan; (vi) neither Seller nor any Affiliate is subject to any material
penalty or tax with respect to any Seller Employee Plan under Section 406(i) of
ERISA or Section 4975 through 4980 of the Code; (vii) all contributions,
premiums or other payments due from Seller or its Affiliates with respect to any
Seller Employee Plan have been fully paid or adequately provided for on the
Audited Financial Statements; and (viii) all reports required by any
governmental agency to be filed with respect to each Seller Employee Plan since
April 1, 1996 have been timely filed except where the failure to be so timely
filed would not have a Seller Material Adverse Effect.

          (e) Pension Plan Qualification Funding.
              ---------------------------------- 

              (i)   With respect to each Pension Plan which is intended to be
qualified under Section 401(a) of the Code, each such Pension Plan has received
a favorable determination as to its qualification from the IRS and nothing has
occurred, whether by action or failure to act, which would cause the loss of
such qualification.

              (ii)  The Audited Financial Statements of Seller reflect all
employee benefit liabilities of Seller in a manner satisfying the requirements
of FAS 87 and 88.

              (iii) With respect to each Pension Plan that is subject to the
provisions of Title I, Subtitle B, part 3 of ERISA, the funding method used in
connection with such Pension Plan is acceptable under ERISA, and the actuarial
assumptions used in connection with funding such Pension Plan are, in the
aggregate, reasonable.  No such Pension Plan has incurred any "accumulated
funding deficiency" (as defined in Section 412 of the Code), whether or not
waived.

          (f) Multiemployer Plans.  At no time has Seller or any Affiliate
              -------------------                                         
contributed to or been required to contribute to any Multiemployer Plan.

          (g) No Post-Employment Obligations.  No Seller Employee Plan provides,
              ------------------------------                                    
or has any liability to provide, life insurance, medical or other employee
benefits to any Employee upon his or her retirement or termination of employment
for any reason, except for benefits accrued through the date of termination and
as may be required by statute, and neither Seller nor any Affiliate has ever
represented, promised or contracted (whether in oral or written form) to any
Employee (either individually or to Employees as a group) that such Employee(s)
would be provided with life insurance, medical or other employee welfare
benefits upon their retirement or termination of employment, except to the
extent required by statute.

                                       18
<PAGE>
 
          (h)  Effect of Transaction.
               --------------------- 

               (i)  The execution of this Agreement and the consummation of the
transactions contemplated hereby will not (either alone or upon the occurrence
of any additional or subsequent events) constitute an event under any Seller
Employee Plan, Employee Agreement, trust or loan or applicable law that will
result in any payment (whether of severance pay or otherwise), acceleration,
forgiveness of indebtedness, vesting, distribution, increase in benefits or
obligation to fund benefits with respect to any Employee.

               (ii) No payment or benefit that will be made by Seller or any
Affiliate with respect to any Employee as a result of the transactions
contemplated by this Agreement will be characterized as an "excess parachute
payment" within the meaning of Section 280G(b)(1) of the Code.

          (i)  Funded Welfare Benefit Plans.  Each Seller Employee Plan which is
               ----------------------------                                     
maintained in connection with any trust or other arrangement described in
Section 501(c)(9) of the Code or is otherwise funded within the meaning of
Section 419 of the Code has received a favorable ruling as to its tax-exempt
status and nothing has occurred, whether by action or failure to act, which
would cause the loss of such tax-exempt status.

          (j)  COBRA.  With respect to any group health plan within the meaning
               -----                                                           
of Section 4980B(g)(2) of the Code, the provisions of Section 4980B of the Code
have been complied with in all material respects.

     2.19 Employee Relations.  The Seller has have approximately 42 full-time
          ------------------                                                 
equivalent employees and generally enjoy good employer-employee relations.  The
Seller is not delinquent in payments to any of its employees or consultants for
any wages, salaries, commissions, bonuses or other direct compensation for any
services performed by them to the date hereof or amounts required to be
reimbursed to such employees.  Upon termination of the employment of any
employees, neither the Seller nor the Buyer or the Surviving Corporation will by
reason of the Merger or anything done prior to the Effective Time be liable to
any of such employees for severance pay or any other payments (other than
accrued salary, vacation or sick pay in accordance with the Seller's normal
policies).  True and complete information as to all current directors, officers,
employees or consultants of the Seller, including, in each case, name, current
job title, base salary, bonus potential, commissions and termination obligations
has been previously furnished to the Buyer.

     2.20 Employment Matters.  The Seller is in compliance in all material
          ------------------                                              
respects with all applicable foreign, federal, state and local laws, rules and
regulations respecting employment, employment practices, terms and conditions of
employment and wages and hours, in each case, with respect to Employees.  No
work stoppage or labor strike against the Seller or any of its Subsidiaries is
pending or, to the best knowledge of the Seller, threatened.  The Seller is not
involved in or, to the best knowledge of the Seller, threatened with, any labor
dispute, grievance, or litigation relating to labor, safety or discrimination
matters involving any Employee, including, without limitation, charges of unfair
labor practices or discrimination complaints.  The Seller has not engaged in any
unfair labor practices within the meaning of the National Labor Relationships
Act.  The Seller is not presently, nor has it been in the past, a party to, or
bound by, (i) any collective bargaining agreement or union contract

                                       19
<PAGE>
 
with respect to Employees and no collective bargaining agreement is being
negotiated by the Seller or (ii) any statutory works council or other agreement,
statute, rule or regulation that mandates employee approval, participation,
consultation or consent with regard to the transactions contemplated hereby.

     2.21 Employee Conflicts.  To the Seller's knowledge, no employee of the
          ------------------                                                
Seller (a) is in violation of any term of any employment contract, patent
disclosure agreement, non-competition agreement, or any restrictive covenant to
a former employer relating to the right of any such employee to be employed by
the Seller because of the nature of the business conducted or presently proposed
to be conducted by the Seller or to the use of trade secrets or proprietary
information of others or (b) has given notice to the Seller nor is the Seller
otherwise aware, that any such employee intends to terminate his or her
employment with the Seller.

     2.22 Transactions with Management.  No executive officer or director of the
          ----------------------------                                          
Seller has (whether directly or indirectly through another entity in which such
person has an interest, other than as the holder of less that 1% of a class of
securities of a publicly traded company) any interest in (a) any property or
assets of the Seller (except as a shareholder), (b) any current competitor,
customer or supplier of the Seller, or (c) any person which is currently a party
to any material contract or agreement with the Seller.

     2.23 Insurance.  The Seller Disclosure Schedule sets forth a list of all
          ---------                                                          
policies or binders of fire, liability, product liability, workmen's
compensation, vehicular, directors' and officers' and other insurance held by or
on behalf of the Seller.  Such policies and binders are in full force and
effect, are reasonably believed to be adequate for the businesses engaged in by
the Seller, as applicable, and are in conformity with the requirements of all
leases or other agreements to which the Seller is a party and, to the best
knowledge of the Seller, are valid and enforceable in accordance with their
terms.  The Seller is not in default with respect to any provision contained in
any such policy or binder nor has the Seller failed to give any notice or
present any claim under any such policy or binder in due and timely fashion.
There are no outstanding unpaid claims under any such policy or binder.  The
Seller has not received notice of cancellation or non-renewal of any such policy
or binder.

     2.24 Brokerage.  Except as otherwise disclosed to the Buyer in writing, no
          ---------                                                            
broker, finder, agent or similar intermediary has acted on behalf of the Seller
or any of the Principal Stockholders in connection with this Agreement or the
transactions contemplated hereby, and there are no brokerage commissions,
finders' fees or similar fees or commissions payable in connection herewith
based on any agreement, arrangement or understanding with the Seller or any of
the Principal Stockholders, or any action taken by any of them.

     2.25 Hazardous Materials.
          ------------------- 

          (a) There are no Hazardous Materials (as hereinafter defined)
generated, used, handled or stored by the Seller.  There has been no generation,
use, handling, storage or disposal of any Hazardous Materials in violation of
common law or any applicable environmental law at any site owned or premises
leased by the Seller during the period of the Seller's ownership or lease or, to
the best of Seller's knowledge, prior thereto.  Nor has there been or is there
threatened any release of any Hazardous Materials on or at any such site or

                                       20
<PAGE>
 
premises during such period or, to the best of Seller's knowledge, prior thereto
in violation of common law or any applicable environmental law or which created
or will create an obligation to report or remediate such release.  "Hazardous
Materials" means any "hazardous waste" as defined in either the United States
Resource Conservation and Recovery Act or regulations adopted pursuant to said
Act, and any "hazardous substances" or "hazardous materials" as defined in the
United States Comprehensive Environmental Response, Compensation and Liability
Act.

          (b) There is no environmental or health and safety matter that could
have a material adverse effect on the Business of Seller.  The Seller has
previously furnished to the Buyer and copies of any environmental audits or risk
assessments, site assessments, documentation regarding off-site disposal of
Hazardous Materials, spill control plans and material correspondence with any
governmental agency regarding the foregoing.

     2.26 Disclosure.  The representations and warranties and statements of the
          ----------                                                           
Seller and contained in this Agreement do not contain any untrue statement of a
material fact, and, when taken together, do not omit to state any material fact
necessary to make such representations, warranties and statements, in light of
the circumstances under which they are made, not misleading.  There is no fact
specifically relating to the Business of Seller and known to the Seller that has
not been disclosed to the Buyer in this Agreement that is reasonably likely to
have a material adverse effect on the Business of Seller.


               SECTION 3 - REPRESENTATIONS AND WARRANTIES OF THE
                            PRINCIPAL STOCKHOLDERS

     Except as set forth on the disclosure schedule delivered to the Buyer on
the date hereof (the "Stockholder Disclosure Schedule"), the section numbers of
which are numbered to correspond to the section numbers of this Agreement to
which they refer, each of the Principal Stockholders, severally but not jointly,
represents and warrants to the Buyer and Acquisition as to itself only as
follows:

     3.1  Authority to Execute and Perform Agreements.  Such Principal
          -------------------------------------------                 
Stockholder has the full legal right and power and all authority and approvals
required to enter into, execute and deliver this Agreement and the Stockholder
Letter (as defined in Section 5.9) and to perform fully its or his obligations
hereunder and thereunder.  This Agreement has been duly executed and delivered
and is the valid and binding obligation of such Principal Stockholder
enforceable in accordance with its terms.  When executed and delivered pursuant
hereto, the Stockholder Letter will be the valid and binding obligation of such
Principal Stockholder enforceable in accordance with its terms.

     3.2  No Breach.  The execution, delivery and performance of this Agreement
          ---------                                                            
and the Stockholder Letter and the consummation of the transactions contemplated
hereby and thereby will not (a) violate, conflict with or result in the breach
of any of the terms or conditions of, result in modification of the effect of,
or otherwise give any other contracting party the right to terminate, or
constitute (or with notice or lapse of time or both constitute) a default under,
any material instrument, contract or other agreement to which the Principal
Stockholder is a party or to which the Principal Stockholder or its assets or
properties may be

                                       21
<PAGE>
 
bound or subject; (b) violate any order, judgment, injunction, award or decree
of any court, arbitrator or governmental or regulatory body against, or binding
upon, the Principal Stockholder or upon the securities, properties or assets of
the Principal Stockholder; (c) violate any statute, law or regulation of any
jurisdiction as such statute, law or regulation relates to the Principal
Stockholder; or (d) require the approval or consent of any foreign, federal,
state, local or other governmental or regulatory body or the approval or consent
of any other person.

     3.3  Title to Shares.  Such Principal Stockholder owns beneficially and of
          ---------------                                                      
record, free and clear of any lien, claim or encumbrance, the shares of Seller
Stock set forth opposite such stockholder's name on Section 3.3 of the Seller
Disclosure Schedule.  There are no shareholder agreements, voting trusts,
proxies or other agreements or understandings with respect to the outstanding
shares of capital stock of the Seller to which any Principal Stockholder is a
party.

     3.4  Absence of Control.  Such Principal Stockholder, together with all of
          ------------------                                                   
its affiliates, does not hold 50% or more of the outstanding voting securities
of the Seller or have the contractual power to designate 50% or more of the
directors of the Seller.


                 SECTION 4 - REPRESENTATIONS AND WARRANTIES OF
                             BUYER AND ACQUISITION

     Except as set forth on the disclosure schedule delivered to the Buyer on
the date hereof (the "Buyer Disclosure Schedule") or in the documents identified
in Section 4.4 (such documents, together with the Buyer Disclosure Schedule, the
"Buyer Disclosure Documents"), the section numbers of which are numbered to
correspond to the section numbers of this Agreement to which they refer, the
Buyer represents and warrants regarding itself and Acquisition, and Acquisition
represents and warrants regarding itself, to the Seller as follows:

     4.1  Organization.  Each of the Buyer and Acquisition is a corporation duly
          ------------                                                          
organized, validly existing and in good standing under the laws of its state of
incorporation with full corporate power and authority to own, lease and operate
its assets and to carry on its business as now being and as heretofore
conducted.

     4.2  Authority to Execute and Perform Agreement.  Each of the Buyer and
          ------------------------------------------                        
Acquisition has the corporate power and authority to enter into, execute and
deliver this Agreement and, with respect to the Buyer only, the Registration
Rights Agreement and the Escrow Agreements, and to perform fully its respective
obligations hereunder and, with respect to the Buyer, thereunder.  The execution
and delivery of this Agreement and, with respect to the Buyer, the Registration
Rights Agreement and the Escrow Agreements, and the consummation of the
transactions contemplated hereby and, with respect to the Buyer, thereby have
been duly authorized by the Board of Directors of the Buyer, which is the only
required corporate action on the part of the Buyer, and by all necessary
corporate action on the part of Acquisition.  This Agreement has been duly
executed and delivered by each of Buyer and Acquisition and constitutes a valid
and binding obligation of each, enforceable in accordance with its terms.  The
Registration Rights Agreement and the Escrow Agreements have been

                                       22
<PAGE>
 
duly executed and delivered by the Buyer and each constitutes its valid and
binding obligation, enforceable in accordance with its respective terms.

     4.3  Capitalization.
          -------------- 

          (a)  The Buyer is authorized to issue 40,000,000 shares of Buyer
Common Stock, of which 10,670,461 shares were issued and outstanding as of March
30, 1998, and 5,000,000 shares of preferred stock, $.01 par value, issuable in
series, none of which are outstanding. As of March 30, 1998, except for an
aggregate of 1,682,846 shares of Buyer Common Stock reserved for issuance under
various stock option and stock purchase plans of the Buyer, there is no
outstanding right, subscription, warrant, call, preemptive right, option or
other agreement of any kind to purchase or otherwise to receive from the Buyer
any shares of the capital stock or any other security of the Buyer and there is
no outstanding security of any kind convertible into or exchangeable for such
capital stock. When issued in accordance with the terms of this Agreement, the
Buyer Common Stock to be issued pursuant to the Merger will be duly authorized,
validly issued, fully paid, nonassessable and free of any preemptive rights.

     (b)  All the issued and outstanding shares of capital stock of Acquisition
have been or, at the Closing, will be duly authorized and validly issued, fully
paid and nonassessable, will not have been issued in violation of any preemptive
rights and will be owned by the Buyer.

     4.4  SEC Reports.  The Buyer has previously made available to the Seller
          -----------                                                        
its (i) Annual Report on Form 10-K for the year ended July 31, 1997 (the "Buyer
10-K"), as filed with the SEC, (ii) all proxy statements relating to the Buyer's
meetings of stockholders held since December 31, 1997 and (iii) all other
periodic and current reports filed by the Buyer with the SEC under the
Securities Exchange Act of 1934 (the "Exchange Act") since December 31, 1997. As
of their respective dates, such reports complied in all material respects with
applicable SEC requirements and did not contain any untrue statement of a
material fact or omit to state a material fact required to be stated therein or
necessary to make the statements therein, in light of the circumstances under
which they were made, not misleading. The Buyer has timely filed with the SEC
all reports required to be filed under Sections 13, 14 or 15(d) of the Exchange
Act since December 31, 1997.

     4.5  No Material Adverse Change.  Since December 31, 1997, except as
          --------------------------                                     
described in a Buyer Form 10-Q or Form 8-K, there has not been any material
adverse change in the assets, properties, business, results of operations or
financial condition of the Buyer and its subsidiaries taken as a whole (the
"Business of Buyer").

     4.6  No Breach.  Except for (a) the registration with the SEC of the Buyer
          ---------                                                            
Common Stock to be issued in the Merger, (b) the filing of the Merger
Certificate with the Secretary of State of Delaware, (c) filings with various
state blue sky authorities and (d) the filing with the Nasdaq National Market of
an application for listing of the shares of Buyer Common Stock to be issued in
the Merger, the execution, delivery and performance of this Agreement by the
Buyer and Acquisition, the Registration Rights Agreement, and the Escrow
Agreements by the Buyer and consummation by such parties of the transactions
contemplated hereby will not (i) violate any provision of the Certificate of
Incorporation or Bylaws of the Buyer or the

                                       23
<PAGE>
 
Certificate of Incorporation or Bylaws of Acquisition; (ii) violate, conflict
with or result in the breach of any of the terms or conditions of, result in
modification of the effect of, or otherwise give any other contracting party the
right to terminate, or constitute (or with notice or lapse of time or both
constitute) a default under, any instrument, contract or other agreement to
which the Buyer or Acquisition is party or to which either of them or any of
their assets, properties or securities is bound or subject; (iii) violate any
law, ordinance or regulation or any order, judgment, injunction, decree or
requirement of any court, arbitrator or governmental or regulatory body
applicable to the Buyer or Acquisition or by which any of their assets,
properties or securities is bound; (iv) require any filing with, notice to, or
permit, consent or approval of, any governmental or regulatory body or (v)
result in the creation of any lien or other encumbrance on the assets,
properties or securities of the Buyer or Acquisition, excluding from the
foregoing clauses (ii), (iii), (iv) and (v) any exceptions to the foregoing
that, in the aggregate, would not have a material adverse effect on the Business
of Buyer or on the ability of the Buyer or Acquisition to consummate the
transactions contemplated hereby.

     4.7  Actions and Proceedings.  There are no outstanding orders, awards,
          -----------------------                                           
judgments, injunctions, decrees or other requirements of any court, arbitrator
or governmental or regulatory body against the Buyer or any of its securities,
assets or properties.  There are no actions, suits, investigations or claims or
legal, administrative or arbitration proceedings pending or, to the best
knowledge of the Buyer, threatened against the Buyer that in the aggregate could
have a material adverse effect upon the transactions contemplated hereby or the
Business of Buyer.  To the best knowledge of the Buyer, there is no fact, event
or circumstance now in existence that reasonably could be expected to give rise
to any action, suit, claim, proceeding or investigation that individually or in
the aggregate would have a material adverse effect upon the transactions
contemplated hereby or on the Business of Buyer.

     4.8  Brokerage.  Except as otherwise disclosed to the Seller in writing, no
          ---------                                                             
broker, finder, agent or similar intermediary has acted on behalf of the Buyer
in connection with this Agreement or the transactions contemplated hereby, and
there are no brokerage commissions, finders' fees or similar fees or commissions
payable in connection herewith based on any agreement, arrangement or
understanding with the Buyer, or any action taken by it.

     4.9  Capitalization of Engage.  As of March 30, 1998, Engage Technologies,
          ------------------------                                             
Inc. ("Engage") was authorized to issue up to 10,000,000 shares of common Stock,
par value $0.01 per share ("Engage Common Stock"), of which 8,093,750 shares
were issued and outstanding.  As of March 30, 1998, Engage had a total of
1,906,250 shares of Engage Common Stock reserved for issuance upon the exercise
of stock options.  Engage is currently considering a recapitalization upon the
consummation of which Engage will be authorized to issue up to 25,000,000 shares
of capital stock, consisting of 20,000,000 of Engage Common Stock and of
5,000,000 of preferred stock. Immediately after the consummation of the
recapitalization, there will be (i) 93,750 shares of Engage Common Stock issued
and outstanding, (ii) 800,000 shares of Engage Preferred Stock issued and
outstanding, all of which shall be designated Series A Convertible Preferred
Stock ("Series A Preferred Stock"), each share of which is convertible into ten
(10) shares of Engage Common Stock, and (iii) 2,879,934 shares of Engage Common
Stock reserved for issuance upon exercise of stock options.

                                       24
<PAGE>
 
     4.10 Disclosure.  The representations and warranties and statements of the
          ----------                                                           
Buyer contained in this Agreement do not contain any untrue statement of a
material fact, and, when taken together, do not omit to state any material fact
necessary to make such representations and warranties and statements, in light
of the circumstances under which they are made, not misleading.


                     SECTION 5 - COVENANTS AND AGREEMENTS

     The parties covenant and agree as follows:

     5.1  Conduct of Business.  Except with the prior written consent of the
          -------------------                                               
Buyer, which will not be unreasonably withheld, and except as otherwise
contemplated herein, during the period from the date hereof to the earlier of
the Effective Date and the termination of this Agreement in accordance with
Section 9 hereof, the Seller shall observe the following covenants:

          (a)  Affirmative Covenants Pending Closing.  The Seller will:
               -------------------------------------                   

               (i)    Preservation of Personnel.  Use reasonable commercial 
                      -------------------------    
efforts to preserve intact its business organization and keep available the
services of present employees, in each case in accordance with past practice, it
being understood that termination of employees with poor performance ratings
shall not constitute a violation of this covenant;

               (ii)   Insurance.  Use reasonable commercial efforts to keep 
                        --------- 
in effect casualty, public liability, worker's compensation and other insurance
policies in coverage amounts not less than those in effect at the date of this
Agreement;

               (iii)  Preservation of the Business; Maintenance of Properties,
                      --------------------------------------------------------
Contracts.  Use reasonable commercial efforts to preserve its businesses,
- ---------                                                                
advertise, promote and market its services, keep its properties intact, preserve
its goodwill, and maintain all physical properties in good operating condition;

               (iv)   Intellectual Property Rights.  Use reasonable commercial 
                      ----------------------------  
efforts to preserve and protect the Seller Intellectual Property; and

               (v)    Ordinary Course of Business.  Operate its business 
                      ---------------------------   
diligently and solely in the ordinary course.

          (b)  Negative Covenants Pending Closing.  The Seller will not:
               ----------------------------------                       

               (i)    Disposition of Assets.  Sell or transfer, or  mortgage, 
                      ---------------------  
pledge or create or permit to be created any lien on, any of its assets, other
than sales or transfers in the ordinary course of business and liens existing
under arrangements disclosed herein or permitted under Section 2.15;

               (ii)   Liabilities.  (A) Incur any obligation or liability 
                      -----------    
other than in the ordinary course of the Seller's business, (B) incur any
indebtedness for borrowed money or

                                       25
<PAGE>
 
(C) enter into any contracts or commitments involving payments by the Seller of
$50,000 or more, other than purchase orders, licenses or commitments for
inventory materials and supplies in the ordinary course of business;

               (iii)  Compensation.  (A) Change the compensation or fringe
                      ------------                                        
benefits of any officer, director, employee or consultant, except for ordinary
merit increases for employees other than officers based on periodic reviews in
accordance with past practices or (B) enter into or modify any Plan or any
employment, severance or other agreement with any officer, director, employee or
consultant of the Seller;

               (iv)   Capital Stock.  (A) Grant or accelerate the 
                      -------------   
exercisability of, any option, warrant or other right to purchase, or to convert
any obligation into, shares of its capital stock (other than acceleration of
vesting of options outstanding as of the date hereof upon a change of control of
the Seller pursuant to the terms of the options, the Developer's Bonus Plan and
the Employment Agreement between the Seller and Kip A. Frey dated November 17,
1997), (B) declare or pay any dividend or other distribution with respect to any
shares of its capital stock or (C) issue any shares of its capital stock, except
upon the exercise of options or the conversion of Preferred Stock outstanding on
the date hereof;

               (v)    Charter and Bylaws.  Amend the Certificate of
                      ------------------ 
Incorporation or Bylaws of the Seller;

               (vi)   Acquisitions.  Make any acquisition of property other than
                      ------------   
in the ordinary course of the Seller's business;

               (vii)  License Agreements.  Enter into or modify any license,
                      ------------------                                    
technology development or technology transfer agreement with any other person or
entity, other than license agreements entered into in the ordinary course of
business on the Seller's standard form as previously delivered to the Buyer;

               (viii) Legal Action.  Commence any legal action outside the
                      ------------
ordinary course of business that could expose the Buyer or the Surviving
Corporation directly or indirectly to any material liability as a result of any
counterclaim or cross-claim or otherwise;

               (ix)   Other Material Changes.  Take any affirmative action or 
                      ----------------------     
fail to take any reasonable action within its control as a result of which any
of the changes or events listed in Section 2.8 is likely to occur.

     5.2  Corporate Examinations and Investigations.  Prior to the Effective
          -----------------------------------------                         
Time, the Buyer shall be entitled, through its employees and representatives, to
have such access to the assets, properties, business, books, records and
operations of the Seller as the Buyer shall reasonably request in connection
with the Buyer's investigation of the Seller with respect to the transaction
contemplated hereby.  Any such investigation and examination shall be conducted
at reasonable times and the Seller shall cooperate fully therein.  No
investigation by the Buyer shall diminish or obviate any of the representations,
warranties, covenants or agreements of the Seller or the Principal Stockholders
contained in this Agreement.  In order that the Buyer may have full opportunity
to make such investigation, the Seller shall furnish the representatives of the
Buyer during such period with all such information and copies of

                                       26
<PAGE>
 
such documents concerning the affairs of the Seller as such representatives may
reasonably request and cause its officers, employees, consultants, agents,
accountants and attorneys to cooperate fully with such representatives in
connection with such investigation.

     5.3  Expenses.  Subject to Section 9.3, whether or not the Merger is
          --------                                                       
consummated, each of the Seller and the Buyer shall bear its respective expenses
(and in the case of the Seller, the expenses of the Principal Stockholders up to
$25,000 and the fees and expenses of a purchaser representative for certain
Employee Stockholders up to $7,500) incurred in connection with the preparation,
execution and performance of this Agreement and the transactions contemplated
hereby, including without limitation, all fees and expenses of agents,
representatives, counsel and accountants.

     5.4  Authorization from Others.  Prior to the Closing Date, the parties
          -------------------------                                         
shall use all reasonable efforts to obtain all authorizations, consents and
permits required to permit the consummation of the transactions contemplated by
this Agreement.

     5.5  Consummation of Agreement.  Each party shall use all reasonable
          -------------------------                                      
efforts to perform and fulfill all conditions and obligations to be performed
and fulfilled by it under this Agreement and to ensure that to the extent within
its control or capable of influence by it, no breach of any of the respective
representations, warranties and agreements hereunder occurs or exists on or
prior to the Effective Time, all to the end that the transactions contemplated
by this Agreement shall be fully carried out in a timely fashion.

     5.6  Public Announcements and Confidentiality.  Any press release or other
          ----------------------------------------                             
information to the press or any third party with respect to this Agreement or
the transactions contemplated hereby shall require the prior approval of the
Buyer and the Seller, which approval shall not be unreasonably withheld,
provided that a party shall not be prevented from making such disclosure as it
shall be advised by counsel is required by law or the rules of the Nasdaq
National Market.  The Seller and the Principal Stockholders shall also keep
confidential and shall not use in any manner any information or documents
obtained from the Buyer or its representatives concerning the Buyer's assets,
properties, business and operations, unless readily ascertainable from public
information, already known or subsequently developed by the Seller or the
Principal Stockholders independently, received from a third party not under an
obligation to keep such information confidential or otherwise required by law.
If this Agreement terminates, all copies of any documents obtained from a party
or its representatives will be returned to the other party, except that one copy
thereof may be retained by outside counsel to the party returning such documents
in order to evidence compliance hereunder.  The obligations set forth in the
previous two sentences of this Section 5.6 shall survive termination of this
Agreement.

     5.7  No Solicitation.  The Seller and the Principal Stockholders will not
          ---------------                                                     
(i) solicit, initiate or encourage discussions with any person, other than the
Buyer, relating to the possible acquisition of the Seller or all or a material
portion of the assets or capital stock of the Seller or any merger or other
business combination with the Seller (an "Acquisition Transaction") or (ii)
participate in any negotiations regarding, or furnish to any other person
information with respect to, any effort or attempt by any other person to do or
to seek any Acquisition Transaction.  The Seller and the Principal Stockholders
agree to inform the Buyer

                                       27
<PAGE>
 
in reasonable detail within one business day of their receipt of any offer,
proposal or inquiry relating to any Acquisition Transaction.

     5.8  Stockholder Meeting.  The Seller acting through its Board of
          -------------------                                         
Directors, shall, in accordance with applicable laws and its Certificate of
Incorporation and Bylaws:  (a) as soon as practicable after the date hereof duly
hold a meeting of its stockholders for the purpose of considering and acting on
this Agreement or solicit written consents from its stockholders approving and
adopting this Agreement; (b) include in the materials sent to the Seller's
stockholders the recommendation of its Board of Directors that stockholders of
the Seller vote in favor of the approval and adoption of this Agreement; (c)
prepare the information required to be provided to its stockholders in
accordance with applicable law and not include in the materials sent to its
stockholders any statement which is false or misleading or omit to state any
fact required to be stated herein or necessary in order to make the statements
therein not false or misleading (other than information provided by the Buyer
for inclusion therein); and (d) use its best efforts to obtain any approval from
its stockholders necessary to consummate the transactions contemplated hereby.

     5.9  Investment Representation and Lock-Ups.  The Seller shall use all
          --------------------------------------                           
reasonable efforts to deliver to the Buyer prior to the Closing Date an
investment representation and lock-up letter from each Employee Stockholder
substantially in the form attached hereto as Exhibit C (an "Employee Stockholder
                                             ---------                          
Letter") and an investment representation and lock-up letter from each Non-
Employee Stockholder in substantially the form attached hereto as Exhibit D (a
                                                                  ---------   
"Non-Employee Stockholder Letter" and along with an Employee Stockholder Letter,
a "Stockholder Letter").  Each Principal Stockholder agrees to deliver to the
Buyer prior to the Closing Date, a Stockholder Letter.

     5.10 Voting of Seller Stock.  The Seller shall use all reasonable efforts
          ----------------------                                              
to deliver to the Buyer prior to the Effective Date from each individual or
entity listed on Schedule 5.10:  (a) a Stockholder Voting Agreement in
                 -------------                                        
substantially the form attached hereto as Exhibit E and (b) an Irrevocable Proxy
                                          ---------                             
in substantially the form attached hereto as Exhibit F.  Each Principal
                                             ---------                 
Stockholder agrees to execute such a Stockholder Voting Agreement and
Irrevocable Proxy.

     5.11 Indemnification Agreements.  The Seller shall use all reasonable
          --------------------------                                      
efforts to deliver to the Buyer prior to the Closing Date from each individual
or entity who will receive Merger Consideration:  (a) if the individual is an
Employee Stockholder, an Employee Indemnification Agreement in substantially the
form of Exhibit G attached hereto and (b) if the individual or entity is a Non-
        ---------                                                             
Employee Stockholder, a Non-Employee Indemnification Agreement in substantially
the form of Exhibit H attached hereto.  Each Principal Stockholder agrees to
            ---------                                                       
execute a Non-Employee Indemnification Agreement.

     5.12 Employment Related Agreements.  The Seller shall use all reasonable
          -----------------------------                                      
efforts to deliver to the Buyer prior to the Closing Date (a) from each employee
of the Seller listed in Item A of Schedule 5.12, a Non-Disclosure, Non-
                                  -------------                       
Competition and Developments Agreement in substantially the form attached hereto
as Exhibit I and (b) from all other employees of the Seller listed in Item B of
   ---------                                                                   
Schedule 5.12 a Non-Disclosure and Developments Agreement substantially in the
- -------------                                                                 
form attached hereto as Exhibit J.
                        --------- 

                                       28
<PAGE>
 
     5.13 Option and Warrant Agreements.  The Seller shall use all reasonable
          -----------------------------                                      
efforts to deliver to the Buyer prior to the Closing Date from each individual
or entity who has or will have vested or unvested options or warrants to
purchase shares of Seller Common Stock an Option and Warrant Holder
Acknowledgement and Release Statement in substantially the form attached hereto
as Exhibit K.
   --------- 

     5.14 Frey Agreement.  The Seller shall enter into an agreement in form and
          --------------                                                       
substance acceptable to the Buyer with Kip A. Frey terminating the letter
agreement between Mr. Frey and the Seller, dated November 14, 1997.

     5.15 Buyer SEC Filings.  The Buyer shall furnish the Seller with a copy of
          -----------------                                                    
each periodic or current report filed by it under the Exchange Act promptly
after filing the same.  All filings made by the Buyer after the date hereof
pursuant to the Exchange Act will be made in a timely fashion, will comply as to
form in all material respects with the applicable provisions of the Exchange Act
and the rules and regulations thereunder and will not contain any untrue
statement of a material fact or omit to state a material fact required to be
stated therein or necessary to make the statements therein, in light of the
circumstances under which they are made, not misleading.
 
     5.16 Disclosure Statements.  Prior to the Closing, each party promptly will
          ---------------------                                                 
supplement or amend its Disclosure Schedule delivered pursuant hereto with
respect to any matter hereafter arising which, if existing, occurring or known
at the date of this Agreement, would have been required to be set forth or
described in such Schedule or which is necessary to correct any information in
such Schedule which has been rendered materially inaccurate thereby.  No
supplement or amendment to a Disclosure Schedule shall be deemed to supplement
or amend such Disclosure Schedule for purposes of (i) determining the accuracy
of any of the representations and warranties made by a party in this Agreement
or (ii) determining whether any condition to a party's obligations to consummate
the Merger has been satisfied.

     5.17 Further Assurances.  Each of the parties shall execute such documents,
          ------------------                                                    
further instruments of transfer and assignment and other papers and take such
further actions as may be reasonably required or desirable to carry out the
provisions hereof and the transactions contemplated hereby.

     5.18 Franchise Taxes.  The Buyer shall pay all outstanding franchise taxes
          ---------------                                                      
owed by the Buyer to the State of Delaware on or before April 17, 1998.

     5.19 C/NET Warrant.
          ------------- 

          (a) If any portion of the tranche of the C/NET Warrant which vested on
February 8, 1998 (the "1998 Tranche") shall expire without having been
exercised, the Buyer shall issue to each Non-Employee Stockholder listed on
Annex I to the Non-Employee Stockholder Escrow Agreement his, her or its pro
rata share of any such portion that had been forfeited pursuant to Section 1(b)
under the Non-Employee Stockholder Escrow Agreement to the Buyer.

                                       29
<PAGE>
 
          (b)  If any portion of the tranche of the C/NET Warrant which vests on
February 8, 1999 (the "1999 Tranche") shall expire without having been
exercised, the Buyer shall issue to each Non-Employee Stockholder listed on
Annex I to the Non-Employee Stockholder Escrow Agreement his or her pro rata
share of any such portion that had been forfeited pursuant to Section 1(d) under
the Non-Employee Stockholder Escrow Agreement to the Buyer in connection with
the termination of such escrow agreement and to each Employee Stockholder listed
on Annex I to the Employee Stockholder Escrow Agreement his or her pro rata
share of any such portion that had been forfeited pursuant to Section 1(g) under
the Employee Stockholder Escrow Agreement to the Buyer in connection with the
termination of such escrow agreement.


              SECTION 6 - CONDITIONS PRECEDENT TO THE OBLIGATIONS
                     OF EACH PARTY TO CONSUMMATE THE MERGER

     The respective obligations of each party to consummate the Merger shall be
subject to the satisfaction or waiver, at or before the Effective Time, of each
of the following conditions:

     6.1  Approvals.  All required approvals of the stockholders of the Seller
          ---------                                                           
and all consents and approvals referred to in this Agreement shall have been
obtained.

     6.2  Absence of Order.  No restraining order or injunction of any court
          ----------------                                                  
which prevents consummation of the Merger shall be in effect.


             SECTION 7 - CONDITIONS PRECEDENT TO THE OBLIGATIONS OF
                 BUYER AND ACQUISITION TO CONSUMMATE THE MERGER

     The obligation of the Buyer and Acquisition to consummate the Merger is
subject to the satisfaction or waiver by the Buyer, at or before the Effective
Time, of the following conditions:

     7.1  Representations, Warranties and Covenants.  The representations and
          -----------------------------------------                          
warranties of the Seller and the Principal Stockholders contained in this
Agreement shall be true and correct in all material respects on and as of the
Effective Time with the same force and effect as though made on and as of the
Effective Time (with such exceptions as may be permitted under or contemplated
by this Agreement) and there shall not have been any material adverse change in
the Business of the Seller since the date hereof.  The Seller and the Principal
Stockholders shall have performed and complied in all material respects with all
covenants and agreements required by this Agreement to be performed or complied
with by them on or prior to the Effective Time.

     7.2  Opinion of Counsel to Seller.  The Buyer shall have received an
          ----------------------------                                   
opinion of counsel to the Seller, dated the Closing Date, in form and substance
reasonably acceptable to the Buyer.

                                       30
<PAGE>
 
     7.3  Merger Documents.  The Surviving Corporation shall have executed and
          ----------------                                                    
delivered the Merger Certificate referred to in Section 1.2.

     7.4  Dissenting Shares.  The Dissenting Shares shall not exceed five
          -----------------                                              
percent (5%) of the shares of Seller Common Stock issued and outstanding or
deemed issued and outstanding on the Closing Date.

     7.5  Tax Opinion.  The Buyer shall have received an opinion of its counsel,
          -----------                                                           
dated the Closing Date, substantially to the effect that, on the basis of the
facts and representations set forth in such opinion, or set forth in writing
elsewhere and referred to therein, for federal income tax purposes the Merger
will constitute a reorganization within the meaning of Section 368(a) of the
Code and that no gain or loss will be recognized by the Buyer or the Seller by
reason of the Merger.

     7.6  Stockholder Letters.  The Buyer shall have received the Stockholder
          -------------------                                                
Letters referred to in Section 5.9.

     7.7  Escrow Agreements.  The Escrow Agreements, substantially in the forms
          -----------------                                                    
attached hereto as Exhibit A and Exhibit B, shall have been executed and
                   ---------     ---------                              
delivered by all parties thereto.

     7.8  Stockholder Voting Agreements.  The Buyer shall have received
          -----------------------------                                
Stockholder Voting Agreements in substantially the form attached hereto as
Exhibit E from each individual or entity listed on Schedule 5.10, and such
- ---------                                          -------------          
agreements shall be in full force and effect.

     7.9  Irrevocable Proxies.  The Buyer shall have received Irrevocable
          -------------------                                            
Proxies in substantially the form attached hereto as Exhibit F from each
                                                     ---------          
individual or entity listed on Schedule 5.10, and such proxies shall be in full
                               -------------                                   
force and effect.

     7.10 Indemnification Agreements.  The Buyer shall have received (i)
          --------------------------                                    
Employee Indemnification Agreements in substantially the form attached hereto as
Exhibit G from each Employee Stockholder and (ii) Non-Employee Indemnification
- ---------                                                                     
Agreements in substantially the form attached hereto as Exhibit H from each Non-
                                                        ---------              
Employee Stockholder and such agreements shall be in full force and effect .

     7.11 Non-Disclosure, Non-Competition and Developments Agreements.  The
          -----------------------------------------------------------      
Buyer shall have received Non-Disclosure, Non-Competition and Developments
Agreements in substantially the form attached hereto as Exhibit I from each
                                                        ---------          
individual described in Section 5.12.

     7.12 Non-Disclosure and Developments Agreements.  The Buyer shall have
          ------------------------------------------                       
received Non-Disclosure and Developments Agreements in substantially the form
attached hereto as Exhibit J from the individuals described in Section 5.12.
                   ---------                                                

     7.13 Option and Warrant Holder Agreements.  The Buyer shall have received
          ------------------------------------                                
Option and Warrant Holder Acknowledgment and Release Statements in substantially
the form attached hereto as Exhibit K from each individual or entity who has
                            ---------                                       
vested or unvested options or warrants to purchase shares of Seller Common
Stock.

                                       31
<PAGE>
 
     7.14  Frey Agreement.  The Buyer shall have received satisfactory evidence
           --------------                                                      
of the waiver of certain provisions in, and the termination of, the letter
agreement between the Seller and Kip A. Frey, as described in Section 5.14.

     7.15 Tax Representation Letter.  The Buyer shall have received a tax
          -------------------------                                      
representation letter from the Seller in form and substance reasonably
satisfactory to counsel to the Buyer.

     7.16 Officer's Certificate.  The Buyer shall have received a certificate
          ---------------------                                              
dated the Closing Date from the President of the Seller stating that (a) the
representations and warranties of the Seller contained in this Agreement are
true and correct in all material respects as of the Closing Date, (b) the Seller
has performed and complied in all material respects with its obligations and
agreements hereunder, (c) there has not been a material adverse change in the
Business of Seller since the date of this Agreement, (d) the interim financial
statements of the Seller dated February 28, 1998, attached thereto, have been
prepared from, and are in accordance with, the books and records of the Seller
and present fairly the financial position and the results of operations of the
Seller as of the date and for the periods indicated in accordance with GAAP
consistently applied throughout the periods involved except as otherwise stated
therein, and subject to normal year end audit adjustments, which are not, in the
aggregate, material and subject to the addition of appropriate notes and (e)
there has been no material adverse change in the Business of Seller since
February 28, 1997.

     7.17 Assistant Secretary's Certificate.  The Buyer shall have received a
          ---------------------------------                                  
certificate in form reasonably satisfactory to the Buyer dated the Closing Date
from the Assistant Secretary of the Seller (i) attaching (A) the Seller's
certificate of incorporation, (B) the Seller's bylaws and (C) all corporate
action taken in connection herewith, and (ii) certifying the incumbency of the
Seller's officers who execute documents in connection herewith.

     7.18 Additional Items.  The Seller and each Principal Stockholder shall
          ----------------                                                  
have furnished the Buyer with such other certificates and documents, such as
good standing and due qualification certificates, as have been reasonably
requested by the Buyer.


           SECTION 8 - CONDITIONS PRECEDENT TO THE OBLIGATION OF THE
         SELLER AND THE PRINCIPAL STOCKHOLDERS TO CONSUMMATE THE MERGER


     The obligation of the Seller and the Principal Stockholders to consummate
the Merger is subject to the satisfaction or waiver by them, at or before the
Effective Time, of the following conditions:

     8.1  Representations, Warranties and Covenants.  The representations and
          -----------------------------------------                          
warranties of the Buyer and Acquisition contained in this Agreement shall be
true and correct in all material respects on and as of the Effective Time with
the same force and effect as though made on and as of the Effective Time (with
such exceptions as may be permitted under or contemplated by this Agreement) and
there shall not have been any material adverse change in the Business of Buyer
since January 31, 1998 which has not been publicly disclosed.  Each of the Buyer
and Acquisition shall have performed and complied in all material respects with
all

                                       32
<PAGE>
 
                                             **Confidential Treatment Requested.
                                               Omitted information filed
                                               separately with the Commission.

 
covenants and agreements required by this Agreement to be performed or complied
with by it on or prior to the Effective Time.

     8.2  Opinion of Counsel to Buyer.  The Seller shall have received an
          ---------------------------                                    
opinion of counsel to the Buyer and Acquisition, dated the Closing Date, in form
and substance reasonably acceptable to the Seller.

     8.3  Tax Opinion.  The Seller shall have received an opinion of KPMG Peat
          -----------                                                         
Marwick LLP, addressed to the Seller and its stockholders and dated the Closing
Date, substantially to the effect that, on the basis of facts and
representations set forth in such opinion, or set forth in writing elsewhere and
referred to therein, for federal income tax purposes the Merger will constitute
a reorganization within the meaning of Section 368(a) of the Code and no gain or
loss will be recognized by the Seller or its stockholders by reason of the
receipt of the shares of Buyer Common Stock in the Merger (it being understood
that such opinion will not extend to cash payments in lieu of fractional share
interests, need not extend to shares of Buyer Common Stock received by holders
of vested stock options to purchase shares of Seller Stock and need not extend
to options to purchase shares of Engage Common Stock pursuant to Section 1.8.

     8.4  Registration Rights Agreement.  A registration rights agreement
          -----------------------------                                  
substantially in the form attached hereto as Exhibit L shall have been executed
                                             ---------                         
and delivered by the Buyer.

     8.5  Engage Options.  CMG shall have caused Engage Technologies, Inc.
          --------------                                                  
("Engage") to have granted, which grant shall have been conditioned upon the
consummation of the Merger, five-year options to purchase shares of Engage
Common Stock to the individuals and in the amounts, at the exercise price and
according to the vesting schedule specified on Schedule 8.5.  Such option
                                               ------------              
exercise prices are based on a combined value of Engage and the Seller of $[ ]**
with the Seller being valued at $35,000,000 CMG agrees to cause Engage to
reprice such options if within six (6) months of the Closing Date, Accipiter has
not been merged with Engage or the business of Accipiter has not been otherwise
acquired by Engage. Options for 176,684 shares of Engage Common Stock are
reserved for issuance on or before October 8, 1998 to the individuals listed on
Schedule 8.5 or to individuals hired by the Seller on or before June 30, 1998.
- ------------
Such reserved options shall be awarded with the mutual agreement of the Buyer
and Kip A. Frey.

     8.6  Officer's Certificate.  The Seller shall have received a certificate
          ---------------------                                               
dated the Closing Date from the President or Chief Financial Officer of the
Buyer stating that (a) the representations and warranties of the Buyer contained
in this Agreement are true and correct in all material respects as of the
Closing Date, (b) the Buyer has performed and complied in all material respects
with its obligations and agreements hereunder, and (c) there has not been a
material adverse change in the Business of Buyer since December 31, 1997.

     8.7  Secretary's Certificate.  The Seller shall have received a certificate
          -----------------------                                               
in form reasonably satisfactory to the Seller dated the Closing Date from the
Secretary of each of Buyer and Acquisition (a) attaching (i) the Buyer's or
Acquisition's certificate of incorporation, (ii) the Buyer's or Acquisition's
bylaws, (iii) all corporate action taken in connection herewith, and (b)
certifying the incumbency of the Buyer's or Acquisition's officers who execute
documents in connection herewith.

                                       33
<PAGE>
 
     8.8  Additional Items.  The Buyer shall have furnished the Seller with such
          ----------------                                                      
other certificates and documents as have been reasonably requested by the
Seller.


                 SECTION 9 - TERMINATION, AMENDMENT AND WAIVER

     9.1  Termination.  This Agreement may be terminated at any time prior to
          -----------                                                        
the Effective Time, whether prior to or after approval by the Seller's
stockholders, as follows:

          (a)  by the Seller or the Buyer if, without fault of the terminating
party, the Effective Time shall not have occurred on or before April 30, 1998,
which date may be extended by mutual consent of the parties;

          (b)  by the Board of Directors of the Seller upon written notice to
the Buyer if the Buyer or Acquisition has materially breached any
representation, warranty, covenant or agreement contained herein and has not
cured such breach within ten (10) business days of receipt of written notice
from the Seller or by the Closing Date, if earlier;

          (c)  by the Buyer upon written notice to the Seller if the Seller or
any Principal Stockholder has materially breached any representation, warranty,
covenant or agreement contained herein and has not cured such breach within ten
(10) business days of receipt of written notice from the Buyer or by the Closing
Date, if earlier;

          (d)  by any party if any court of competent jurisdiction or
governmental body shall have issued an order, decree or ruling or taken any
other action restraining, enjoining or otherwise prohibiting the Merger and such
order, decree or ruling shall have become final and nonappealable;

          (e)  by either the Buyer or the Seller if the requisite Seller
stockholder vote approving the Merger is not obtained;

          (f)  by the Buyer if the Seller's Board of Directors (i) fails to
recommend that the Seller's stockholders vote in favor of the approval and
adoption of this Agreement, (ii) withdraws its recommendation that stockholders
vote in favor of this Agreement or (iii) adopts resolutions approving or
otherwise authorizes or recommends an Acquisition Transaction; or

          (g)  at any time with the written consent of all of the parties.

     9.2  Effect of Termination.  If this Agreement is terminated as provided in
          ---------------------                                                 
Section 9.1, this Agreement shall forthwith become void and have no effect,
without liability on the part of any party, its directors, officers or
stockholders, other than the provisions of this Section 9.2, Section 5.3
relating to expenses, Section 5.6 relating to publicity and confidentiality to
the extent provided therein and Section 9.3.  Nothing contained in Section 9.2
or 9.3 shall relieve any party from liability for any breach of this Agreement
occurring before such termination.

                                       34
<PAGE>
 
     9.3  Termination Fee.
          --------------- 

          (a)  In order to induce the Buyer to enter into this Agreement and to
reimburse the Buyer for its costs and expenses related to entering into this
Agreement and seeking to consummate the transactions contemplated by this
Agreement, the Seller will make a cash payment to the Buyer of $1,000,000 if and
only if:

               (i)    The Buyer or Seller has terminated this Agreement pursuant
to Section 9.1(e) and at the time of such termination any person (other than the
Buyer) shall have made, or disclosed an intention to make, a proposal to engage
in an Acquisition Transaction;

               (ii)   The Buyer has terminated this Agreement pursuant to
9.1(c); or

               (iii)  The Buyer has terminated this Agreement pursuant to
Section 9.1(f) and prior to such termination or on or before April 30, 1999, (A)
the Seller or a Principal Stockholder shall have entered into an agreement to
engage in an Acquisition Transaction with any person other than Buyer or (B) the
Board of Directors of the Seller shall have approved an Acquisition Transaction
or recommended that stockholders of the Seller approve or accept any Acquisition
Transaction with any person other than the Buyer and the Seller or any of its
representatives had any discussions with such person with respect to an
Acquisition Transaction between February 15, 1998 and the date this Agreement is
terminated.

          (b)  In order to induce the Seller to enter into this Agreement and to
reimburse the Seller for its costs and expenses related to entering into this
Agreement and seeking to consummate the transactions contemplated by this
Agreement, the Buyer will make a cash payment to the Seller of $1,000,000 if and
only if the Seller has terminated this Agreement pursuant to Section 9.1(b).

          (c)  Any payment required by this section will be payable (by wire
transfer of immediately available funds to an account designated by the party
entitled to such payment) within five business days after demand by the party
entitled to such payment.

     9.4  Amendment.  This Agreement may not be amended except by an instrument
          ---------                                                            
signed by each party hereto; provided, however, that after adoption of this
Agreement by the stockholders of the Seller, without the further approval of the
stockholders of the Seller, no amendment may be made that (a) alters or changes
the amount or kind of consideration to be received as provided herein or (b)
alters or changes any of the terms of this Agreement if such alteration or
change would materially adversely affect the stockholders of the Seller.

     9.5  Waiver.  At any time prior to the Effective Time, any party hereto may
          ------                                                                
(a) extend the time for the performance of any of the obligations or other acts
of any other party hereto or (b) waive compliance with any of the agreements of
any other party or any conditions to its own obligations, in each case only to
the extent such obligations, agreements and conditions are intended for its
benefit; provided that any such extension or waiver shall be binding upon a
party only if such extension or waiver is set forth in a writing executed by
such party.

                                       35
<PAGE>
 
                         SECTION 10 - INDEMNIFICATION

     10.1 Survival.  Notwithstanding any right of any party to fully investigate
          --------                                                              
the affairs of the other party and notwithstanding any knowledge of facts
determined or determinable by such party pursuant to such investigation or right
of investigation, each party has the right to rely fully upon the
representations, warranties, covenants and agreements of each other party in
this Agreement or in any certificate, financial statement or other document
delivered by any party pursuant hereto.  All such representations, warranties,
covenants and agreements shall survive the execution and delivery hereof and the
Closing hereunder, subject to the limitations set forth in herein.  No person
shall have a right to recovery against any party (or any officer, director,
employee or agent of a party) other than through the exercise of the
indemnification rights set forth in Sections 10.2, 10.3 and 10.4, which shall
constitute the sole and exclusive remedy after the Closing Date for any breach
by a party of any representation, warranty or covenant contained herein or in
any certificate or other instrument delivered pursuant hereto, other than a
fraudulent or intentional breach.

     10.2 Obligation of Employee Stockholders to Indemnify.
          ------------------------------------------------ 

          (a)  Subsequent to the Effective Time, each individual listed on
Schedule 1.14A shall, up to the value (based on $55.50 per share (the "Reference
- --------------                                                                  
Price" or "Market Value")) of the Merger Consideration received by such
individual, indemnify and hold harmless the Buyer, Acquisition and the Surviving
Corporation (and their respective directors, officers, employees, agents,
affiliates and assigns) from and against all losses, liabilities, damages,
deficiencies, costs or expenses, including interest and penalties imposed or
assessed by any judicial or administrative body and reasonable attorneys' fees,
whether or not arising out of third-party claims and including all amounts paid
in investigation, defense or settlement of the foregoing pursuant to this
Section 10 ("Losses") based upon, arising out of or otherwise in respect of any
inaccuracy in or breach of any representation, warranty or covenant of the
Seller contained herein or in any certificate delivered pursuant hereto.

          (b)  With respect to any indemnification obligation arising as a
result of an inaccuracy in a representation or warranty in Section 2.7, no
indemnification shall be payable after the thirty-sixth month following the
Effective Date, except with respect to claims made prior to such date but not
then resolved.

          (c)  With respect to any indemnification obligation not described in
Section 10.2(b), no indemnification shall be payable after the eighteenth month
following the Effective Date, except with respect to claims made prior to such
date but not then resolved.

     10.3 Obligation of Non-Employee Stockholders to Indemnify.
          ---------------------------------------------------- 

          (a)  Subsequent to the Effective Time, each individual or entity
listed on Schedule 1.14B shall, up to the value (based on the Reference Price)
          --------------                       
of the Merger Consideration received by such individual or entity, indemnify and
hold harmless the Buyer, Acquisition and the Surviving Corporation (and their
respective directors, officers, employees, agents, affiliates and assigns) from
and against all Losses based upon, arising out of or otherwise in respect of any
inaccuracy in or breach of any representation, warranty or

                                       36
<PAGE>
 
covenant of such person individually, or any representation, warranty or
covenant of the Seller contained herein or in any certificate delivered pursuant
hereto.

          (b)  No indemnification obligation pursuant to Section 10.3(a) shall
be payable after the twelve months following the Effective Date, except with
respect to claims made prior to such date but not then resolved.

     10.4 Obligation of the Buyer to Indemnify.
          ------------------------------------ 

          (a)  Subsequent to the Effective Time, the Buyer shall, up to
$35,000,000, indemnify and hold harmless Employee Stockholders and the Non-
Employee Stockholders (and their respective directors, officers, employees,
agents, affiliates and assigns) from and against any Losses based upon, arising
out of or otherwise in respect of any inaccuracy in or breach of any
representation, warranty or covenant of the Buyer contained herein or in any
certificate delivered pursuant hereto.

          (b)  No indemnification pursuant to Section 10.4(b) shall be payable
after the twelve months following the Effective Date, except with respect to
claims made prior to such date but not then resolved.

     10.5 Limitations on Indemnification.
          ------------------------------ 

          (a)  The limitations of Sections 10.2 (b) and (c), 10.3(b) and 10.4(b)
shall not apply in the case of a fraudulent or intentional misrepresentation or
breach by any party.

          (b)  No indemnification shall be payable pursuant to Section 10.2(a),
10.3(a) or 10.4(a) unless the amount of all claims for indemnification pursuant
to the applicable Section exceeds $75,000 in the aggregate, and then such
indemnification shall be payable only for the amounts which exceed $37,500

     10.6 Notice and Defense of Claims.  Promptly after receipt of notice of any
          ----------------------------                                          
claim, liability or expense for which a party seeks indemnification hereunder,
such party shall give written notice thereof to the indemnifying party, but such
notification shall not be a condition to indemnification hereunder except to the
extent of actual prejudice to the indemnifying party.  The notice shall state
the information then available regarding the amount and nature of such claim,
liability or expense and shall specify the provision or provisions of this
Agreement under which the liability or obligation is asserted.  If within 30
days after receiving such notice the indemnifying party gives written notice to
the indemnified party stating that it intends to defend against such claim,
liability or expense at its own cost and expense, then defense of such matter,
including selection of counsel (subject to the consent of the indemnified party
which consent shall not be unreasonably withheld), shall be by the indemnifying
party and the indemnified party shall make no payment on such claim, liability
or expense as long as the indemnifying party is conducting a good faith and
diligent defense.  Notwithstanding the foregoing, the indemnified party shall at
all times have the right to fully participate in such defense at its own expense
directly or through counsel; provided, however, if the named parties to the
action or proceeding include both the indemnifying party and the indemnified
party and representation of both parties by the same counsel would be
inappropriate under applicable standards of professional conduct, the expense of
separate

                                       37
<PAGE>
 
counsel for the indemnified party shall be paid by the indemnifying party.  If
no such notice of intent to dispute and defend is given by the indemnifying
party, or if such diligent good faith defense is not being or ceases to be
conducted, the indemnified party shall, at the expense of the indemnifying
party, undertake the defense of such claim, liability or expense with counsel
selected by the indemnified party, and shall have the right to compromise or
settle the same exercising reasonable business judgment.  The indemnified party
shall make available all information and assistance that the indemnifying party
may reasonably request and shall cooperate with the indemnifying party in such
defense.  No indemnifying party shall without the prior written consent of the
indemnified party (which consent shall not be unreasonably withheld), settle or
compromise or consent to the entry of any judgment with respect to any pending
or threatened claim, action, suit or proceeding in respect of which
indemnification or contribution may be sought hereunder (whether or not the
indemnified party is an actual or potential party to such claim or action)
unless such settlement, compromise or consent includes an unconditional release
of each indemnified party from all liability arising out of such claim, action,
suit or proceeding.


                           SECTION 11 - MISCELLANEOUS

     11.1 Notices.  Any notice or other communication required or permitted
          -------                                                          
hereunder shall be in writing and shall be deemed given when so delivered in
person, by overnight courier, by facsimile transmission (with receipt confirmed
by telephone or by automatic transmission report) or two business days after
being sent by registered or certified mail (postage prepaid, return receipt
requested), as follows:

          (a)  if to the Buyer, to:

               CMG Information Services, Inc.
               100 Brickstone Square, 1st Floor
               Andover, MA 01810
               Attention:  Chief Financial Officer
               Telephone:  781/684-3660
               Facsimile:  781/684-3172
 
          with a copy to:
 
               Palmer & Dodge LLP
               One Beacon Street
               Boston, MA 02108
               Attention:  William Williams
               Telephone:  617/573-0100
               Facsimile:  617/227-4420

                                       38
<PAGE>
 
          (b)  if to the Seller or the Principal Stockholders, to:
 
               Accipiter, Inc.
               4000 Wake Forest Road, Suite 200
               Raleigh, NC 27609
               Attention:   President
               Telephone:   919/872-7755
               Facsimile:   919/872-1714
 
          with a copy to:
 
               Hutchison & Mason PLLC
               4011 Westchase Boulevard, Suite 400
               Raleigh, NC 27607
               Attention:   Fred Hutchison
               Telephone:   919/829-9600
               Facsimile:   919/829-9696

Any party may by notice given in accordance with this Section 11.1 to the other
parties designate another address or person for receipt of notices hereunder.

     11.2 Entire Agreement.  This Agreement includes the exhibits and schedules
          ----------------                                                     
hereto, contains the entire agreement among the parties with respect to the
Merger and related transactions, and supersedes all prior agreements, written or
oral, with respect thereto.

     11.3 Governing Law.  This Agreement is governed by the laws of the State of
          -------------                                                         
Delaware.

     11.4 Binding Effect; No Assignment.  This Agreement shall be binding upon
          -----------------------------                                       
and inure to the benefit of the parties and their respective successors and
permitted assigns.  This Agreement is not assignable without the prior written
consent of the other parties hereto.

     11.5 Variations in Pronouns.  All pronouns and any variations thereof refer
          ----------------------                                                
to the masculine, feminine or neuter,  singular or plural, as the context may
require.

     11.6 Counterparts.  This Agreement may be executed in two or more
          ------------                                                
counterparts, each of which shall be deemed an original, and all of which
together shall constitute one and the same instrument.

     11.7 Disclosure Schedules.  The Disclosure Schedules are a part of this
          --------------------                                              
Agreement as if fully set forth herein.

     11.8 Arbitration.  Except with respect to an action seeking specific
          -----------                                                    
performance or another equitable remedy, any dispute relating to or arising out
of this Agreement, or to a breach of this Agreement, arising among the parties
or their successors, shall be settled by arbitration in accordance with the
commercial arbitration rules of the American Arbitration Association ("AAA").
The arbitration proceeding, including the rendering of an award, shall take
place in Boston, Massachusetts and be administered by the AAA.  The parties
agree to

                                       39
<PAGE>
 
act in good faith to mutually select an arbitrator.  The decision of the
arbitrator shall be binding on the parties hereto or their successors and any
judgment rendered by such arbitrator may be enforced by any court of competent
jurisdiction.  Each party shall bear its own expenses in connection with such
arbitration unless otherwise ordered by the arbitrator.

     11.9 Letter Agreement.  This Agreement supersedes and replaces the letter
          ----------------                                                    
agreement between the parties dated March 11, 1998, which shall be of no further
force and effect.

                                       40
<PAGE>
 
     IN WITNESS WHEREOF, the parties have executed this Agreement under seal as
of the date first stated above.

                               CMG INFORMATION SERVICES, INC.



                               By  /s/ Andrew J. Hajducky III
                                 ----------------------------
                                   Name: Andrew J. Hajducky III
                                   Title:  Chief Financial Officer


                               CMGI ACQUISITION CORPORATION



                               By  /s/ Andrew J. Hajducky III
                                 ------------------------------
                                   Name: Andrew J. Hajducky III
                                   Title:  President


                               ACCIPITER, INC.



                               By  /s/ Kip A. Frey 
                                 ------------------------------
                                   Name: Kip A. Frey
                                   Title:  President



                               THE PRINCIPAL STOCKHOLDERS:



                               /s/ Chris Evans                               
                               --------------------------------
                               Chris Evans

                                       41
<PAGE>
 
               [SIGNATURE PAGE TO AGREEMENT AND PLAN OF MERGER]


                               INTERSOUTH PARTNERS III, L.P

                               By: INTERSOUTH ASSOCIATES III, L.P., its General
                                   Partner


                               By  /s/ Mitch Mumma
                                 ----------------------------------
                                   Mitch Mumma, General Partner of Intersouth
                                   Associates, III, L.P.


                               CORDOVA CAPITAL PARTNERS, L.P. -ENHANCED
                               APPRECIATION

                               By: CORDOVA CAPITAL II, INC., its General Partner


                               By  /s/ Ralph R. Wright
                                 ----------------------------------
                                   Authorized Signatory

<PAGE>
 
                                                                    Exhibit 2.2
                                                                  --------------
                                                                  **Confidential
                                                                     Treatment
                                                                     Requested
 
                     EMPLOYEE STOCKHOLDER ESCROW AGREEMENT

     THIS ESCROW AGREEMENT dated April 8, 1998 (this "Agreement") is among CMG
Information Services, Inc. (the "Buyer"), a Delaware corporation, and Kip A.
Frey, as the representative of the employee stockholders (the "Stockholder
Representative") of Accipiter, Inc. (the "Seller"), a Delaware corporation, and
State Street Bank and Trust Company, as escrow agent (the "Escrow Agent").

                                    RECITALS

     A.   Pursuant to an Agreement and Plan of Merger dated the date hereof (the
"Merger Agreement") between the Buyer, the Seller, CMGI Acquisition Corporation
("Acquisition") and certain stockholders of the Seller, the Buyer is acquiring
the Seller through the merger of the Seller into Acquisition (the "Merger").
Capitalized terms used herein and not otherwise defined have the meanings
assigned to them in the Merger Agreement.

     B.   The individuals listed on Annex I (the "Employee Stockholders") agree
(i) to indemnify the Buyer as provided in Section 10 of the Merger Agreement and
(ii) that payment of the portion of the Merger Consideration placed in escrow
hereunder (the "Escrow Shares") is conditioned upon satisfaction of certain
operating conditions set forth herein.  For purposes of this Agreement, the
phrase "pro rata" shall remain in proportion to each Employee Stockholder's
share allocation as set forth on Annex I.

     NOW, THEREFORE, for good and valuable consideration, the receipt and
sufficiency of which is hereby acknowledged, the parties hereto agree as
follows:

     1.   Contingent Consideration.
          ------------------------ 

     (a)  If the Company fails to meet certain performance targets (a "Default
Event"), then the Merger Consideration due the Employee Stockholders under the
Merger Agreement shall be reduced by the number of Escrow Shares as set forth
below:

          If a Default Event occurs, the following number of Escrow Shares will
be forfeited:

<TABLE> 
<CAPTION> 
          Percent of Projected                              Escrow Shares
           Revenues Achieved                                  Forfeited
          ---------------------                             -------------
          <S>                                               <C> 
          Over 95%                                                    0%
          90 less than to less than or equal to 95%                1.67%    
          85 less than to less than or equal to 90%                3.34%
          80 less than to less than or equal to 85%                5.00% 
          75 less than or equal to less than or equal to 80%       6.67%
          Less than 75%                                            8.34%  
</TABLE> 
<PAGE>
 
                                             **Confidential Treatment Requested.
                                               Omitted information filed
                                               separately with the Commission.

 
<TABLE> 
<CAPTION> 
          Percent of Subscription                           Escrow Shares
             Revenues Achieved                                Forfeited
          -----------------------                           -------------
          <S>                                               <C> 
          Over 95%                                                    0%
          90 less than to less than or equal to 95%                1.67%  
          85 less than to less than or equal to 90%                3.34%
          80 less than to less than or equal to 85%                5.00% 
          75 less than or equal to less than or equal to 80%       6.67%
          Less than 75%                                            8.34%  
</TABLE> 

<TABLE> 
<CAPTION> 
            Percent of Net                                  Escrow Shares
            Income Achieved                                   Forfeited
          -------------------                               -------------
          <S>                                               <C> 
          Over 95%                                                    0%
          90 less than to less than or equal to 95%                1.67%  
          85 less than to less than or equal to 90%                3.34%
          80 less than to less than or equal to 85%                5.00% 
          75 less than or equal to less than or equal to 80%       6.67%
          Less than 75%                                            8.34%  
</TABLE> 

     For the year ending December 31, 1998, Projected Revenues are $[  ]**
Subscription Revenues are $[  ]** and Projected Net Income is $[  ]**. The
targets for the year ending December 31, 1999 will be agreed to in good faith by
the Stockholder Representative and the Buyer. There will be no targets for the
portion of the calendar year 2000 during which this Agreement is in place. The
above targets shall terminate and no Escrow Shares shall thereafter be forfeited
under this Section 1 if the Seller has merged with Engage, Inc. and the
operations of the merged entities are so integrated that the above targets
cannot be reasonably measured.

          (b)  The Escrow Shares to be forfeited will be taken first, on a pro
rata basis, from any employees who have voluntarily left the employment of the
Buyer or any of its direct or indirect subsidiaries (other than termination by
reason of death, permanent disability, for "Good Reason" (as defined below), or
with the prior written approval of the Board of Directors of the Buyer) or have
been terminated from the employment of the Buyer for "Cause" (as defined below)
prior to or during the fiscal year in which the Default Event occurs.  If such
forfeiture is insufficient to meet the number of Escrow Shares to be forfeited
as specified above, any additional Escrow Shares to be forfeited will be taken
from the Escrow Shares of all other Employee Stockholders on a pro rata basis.

          (c)  "Cause" in the event of a employee shall mean (i) conviction of a
felony or the conviction of any offense involving dishonesty or moral turpitude,
(ii) commission of any act of theft, fraud or dishonesty against, or involving
the records of the Buyer or any subsidiaries of the Buyer, (iii) material breach
of the employee's obligations pursuant to any confidentiality, invention or non-
competition agreement between the employee and the Buyer, which, if curable, is
not cured within thirty (30) days following written notice thereof by the Buyer,
(iv) intentional act or gross negligence that has a material detrimental effect
on the reputation or business of the Buyer or any subsidiary of the Buyer, or
(v) repeated failure or inability (other than as a result of physical
disability) to perform any duties reasonably assigned to the employee, which
failure or inability is not cured within thirty (30) days following written
notice thereof by the Buyer.

                                      -2-
<PAGE>
 
          (d)  The employee shall have the right to terminate his or her
employment with the Buyer at any time for "Good Reason" in the event that, other
than for "Cause," if without the employee's prior written consent, (i) the Buyer
materially breaches the terms of employment with respect to the payment of
compensation or benefits or in any other material respect and any such breach is
not cured within thirty (30) days after the Buyer receives written notice
thereof, or (ii) the Buyer requires the employee, as a condition to employment,
to perform illegal or fraudulent acts or omissions; or (iii) the employee's
principal place of employment is moved more than fifty (50) miles from Raleigh,
North Carolina.

          (e)  Notwithstanding the foregoing, an individual Employee Stockholder
shall forfeit fifty percent of his or her Escrow Shares if such Employee
Stockholder shall voluntarily leave the employment of the Buyer or any of its
direct or indirect subsidiaries (other than termination by reason of death,
permanent disability, for "Good Reason" or with the prior written consent of the
Board of Directors of the Buyer) prior to the second anniversary of the
Effective Date.  Any Escrow Shares forfeited under this Section 1(e) shall be
credited towards any Escrow Shares required to be forfeited to the Buyer
hereunder.

          (f)  If C/NET, Inc. exercises any portion of the 1999 Tranche, each
Employee Stockholder shall forfeit Escrow Shares equal to his, her or its pro
rata share of 38.5% of the shares the Buyer must deliver to C/NET, Inc. in
connection with such exercise (calculated on a net exercise basis).

          (g)  If this Agreement terminates with C/NET,Inc. not having exercised
any portion of the 1999 Tranche, each Employee Stockholder shall forfeit Escrow
Shares equal to his, her or its pro rata share of 38.5% of the shares that would
have been deliverable to C/NET, Inc. by the Buyer if the remaining portion had
been exercised (calculated on a net exercise basis) on the date of termination
of this Agreement.

     2.   Establishment of Escrow.  The Buyer has delivered to the Escrow Agent
          -----------------------                                        
and the Escrow Agent acknowledges receipt of the Escrow Shares in the form of
certificates. The Escrow Shares shall be held in escrow in the name of the
Escrow Agent or its nominee, subject to the terms and conditions set forth
herein. Unless and until the Escrow Shares are returned to the Buyer or
delivered to Employee Stockholders pursuant to the terms of this Agreement, the
Escrow Agent shall vote the Escrow Shares in accordance with the written
instructions of the Stockholder Representative.

     3.   Amounts Earned on Escrow Shares: Tax Matters.  All cash amounts
          --------------------------------------------  
earned on the Escrow Shares (cash dividends or other distributions) shall be
distributed pro rata to the Employee Stockholders from time to time upon the
request of the Stockholder Representative. The parties agree that to the extent
permitted by applicable law, the Employee Stockholders will include all amounts
earned on the Escrow Shares in their gross income (based upon each Employee
Stockholder's pro rata share of the Escrow Shares) for federal, state and local
income tax (collectively, "income tax") purposes and pay any income tax
resulting therefrom. Any shares of Seller Common Stock distributed with respect
to the Escrow Shares pursuant to a stock split, stock dividend or similar action
shall be treated as Escrow Shares for all purposes. The parties hereto agree to
provide the Escrow Agent with a certified tax identification number by signing
and returning a Form W-9 (or Form W-8, in the case of non-U.S. persons) to the
Escrow Agent within 30 days from the date hereof. The parties hereto understand
that, in the event their tax identification numbers are not certified to the
Escrow Agent, the Internal Revenue Code may require withholding of a portion of
any distribution or

                                      -3-
<PAGE>
 
other income earned on the Escrow Shares in accordance with the Internal Revenue
Code, as amended from time to time.

     4.   Claims Against Escrow Shares.
          ---------------------------- 

          (a)  At any time or times prior to the Expiration Date (as defined
below), the Buyer may make claims (each a "Claim") (i) against up to fifty
percent of the Escrow Shares for amounts due for indemnification under the
Merger Agreement as agreed to by each Employee Stockholder in an indemnification
agreement delivered to the Buyer on the date hereof or (ii) against up to fifty
percent of the Escrow Shares as specified in Section 1 hereunder.  The Buyer
shall notify the Stockholder Representative and the Escrow Agent in writing of
each such Claim, including a brief description of the amount and nature of such
Claim and the value per share of the Escrow Shares as set forth in this Section.
Each such notice delivered to the Escrow Agent by the Buyer shall contain a
representation of the Buyer to the effect that the Buyer has delivered a copy of
such notice to the Stockholder Representative prior to or simultaneously with
its delivery to the Escrow Agent.  In the event that the amount subject to the
Claim is unliquidated, the Buyer shall make a good faith estimate as to the
amount of the Claim for purposes of determining the number of Escrow Shares, if
any, to be withheld by the Escrow Agent if such claim is not resolved or
otherwise adjudicated by the Expiration Date.  If the Stockholder Representative
disputes such Claim, the Stockholder Representative shall give written notice
thereof to the Buyer and to the Escrow Agent within thirty (30) days after the
date the Buyer's notice of Claim was delivered to the Stockholder
Representative, in which case the Escrow Agent shall continue to hold the Escrow
Shares in accordance with the terms of this Agreement; otherwise, such Claim
shall be deemed to have been acknowledged to be payable in shares out of the
Escrow Shares in the full amount thereof as set forth in the Claim and the
Escrow Agent shall use its best efforts to pay such Claim from the Escrow Shares
to the Buyer within three (3) business days after expiration of that thirty-day
period.  The Escrow Agent shall effect such payment of Escrow Shares to the
Buyer by surrendering such Escrow Shares to the Buyer's transfer agent (Bank of
Boston, c/o Boston EquiServe, L.P., Mail Stop 45-02-09, P. O. Box 644, Boston,
MA  02102) for cancellation upon receipt by the Escrow Agent of a copy of a
letter from the Buyer to the Buyer's transfer agent, instructing such transfer
agent to issue a new certificate to the Escrow Agent for the remaining Escrow
Shares after giving effect to such payment.  If the amount of the Claim exceeds
the aggregate value of the Escrow Shares, the Escrow Agent shall have no
liability or responsibility for any deficiency.  The value per share of the
Escrow Shares for purposes of this Agreement shall be the closing price for the
Escrow Shares for the ten (10) trading days preceding the date of the notice by
the Buyer of any Claim and such value shall be set forth in any such notice.
The Escrow Agent may rely conclusively on the per share value set forth therein
for the purpose of determining the amount of shares required to pay a Claim.
All Claims paid out of the Escrow Shares shall be rounded to the nearest whole
share.  Under no circumstances shall the Employee Stockholders or the
Stockholder Representative have any right to substitute other property for the
Escrow Shares or to change the per share value stated herein.

          (b)  If the Stockholder Representative gives notice to the Buyer and
the Escrow Agent pursuant to Section 4(a) disputing a Claim, no distribution of
the Escrow Shares shall be made by the Escrow Agent to the Buyer or to the
Employee Stockholders of the Set Aside Amount (as defined in Section 5(a)) with
respect to such Claim until either (i) such disputed Claim has been resolved as
evidenced by a written notice executed by the Buyer and the Stockholder
Representative instructing the Escrow Agent as to the distribution of such

                                      -4-
<PAGE>
 
Set Aside Amount or portion thereof or (ii) such dispute shall have been
adjudicated in accordance with the arbitration procedures described in Section
5(b).

     5.   Disputed Claims.
          --------------- 

          (a)  If the Stockholder Representative disputes a Claim as above
provided and subject to Section 4, the Escrow Agent shall set aside a portion of
the Escrow Shares equal to the amount of the Claim as set forth in the notice of
the Claim (the "Set Aside Amount").  In the event the Buyer notifies the Escrow
Agent in writing that it has made out-of-pocket expenditures or anticipates that
it will incur legal expenses in connection with any such disputed Claim with
respect to which it is entitled to be indemnified under the Merger Agreement, a
portion of the Escrow Shares equal to such incurred or anticipated expenditures
shall also be set aside and added to and become a part of the Set Aside Amount,
provided that in the event that it shall be agreed (as evidenced by a written
notice executed by the Buyer and the Stockholder Representative as described in
Section 4(b)) or determined through an arbitration proceeding described in
Section 5(b) that the Buyer is not entitled to indemnification with respect to
such Claim, the Buyer shall not be entitled to such shares.

          (b)  If the Escrow Agent does not receive written notice executed by
the Buyer and the Stockholder Representative within sixty (60) days after the
Stockholder Representative sends notice of such dispute to the effect that the
disputed Claim has been resolved, the Claim shall be referred to an arbitrator
chosen by agreement of the Stockholder Representative and the Buyer.  If no
agreement is reached regarding selection of the arbitrator within thirty (30)
days after written request from either party to the other, the Buyer or the
Stockholder Representative may submit the matter in dispute to the American
Arbitration Association (the "Association"), to be settled by arbitration in
Boston, Massachusetts in accordance with the commercial arbitration rules of the
Association.  The Buyer and the Stockholder Representative agree to act in good
faith to mutually select an arbitrator.  The fees and expenses of any
arbitration shall be borne by the Employee Stockholders and the Buyer in such
proportions as shall be determined by the arbitrator, or if there is no such
determination, then such fees and expenses shall be borne equally by the
Employee Stockholders, on the one hand, and the Buyer, on the other hand.  In no
event shall the Escrow Agent or Stockholder Representative (in such capacity) be
responsible for any fees or expenses of any party to any arbitration proceeding.
The determination of the arbitrator as to the amount, if any, of the Claim that
is properly allowable shall be conclusive and binding upon the parties hereto
and judgment may be entered thereon in any court having jurisdiction.  The
Escrow Agent shall make payment of such Claim, as and to the extent allowed, to
the Buyer out of the Set Aside Amount within three (3) business days following
its receipt of a copy of the arbitration award determination.

     6.   Termination.  This Agreement shall terminate two (2) years after
          -----------                                                     
April 8, 1998 (the "Expiration Date"), provided that there are no outstanding
Claims as to which the Escrow Agent has received notice pursuant to Section 4 on
or prior to the Expiration Date; otherwise this Agreement shall continue in
effect until the resolution of all such Claims for which notice has been
received on or prior to the Expiration Date.  The Buyer shall give the Escrow
Agent prompt written notice of the occurrence of the Expiration Date.  Upon
receipt of such notice or as soon thereafter as is practicable, the Escrow Agent
shall distribute the Escrow Shares less (i) the amount of any then existing Set
Aside Amounts and (ii) the amount specified in any notice of a Claim delivered
to the Escrow Agent on or within thirty (30) days prior to the Expiration Date
with respect to which no Set Aside Amount has yet been established.  At such
time thereafter as any remaining Claim hereunder has been resolved and the
Escrow Agent

                                      -5-
<PAGE>
 
has received a written notice executed by the Buyer and the Stockholder
Representative to that effect (or a copy of an arbitration award pursuant to
Section 5(b) to that effect) and any amounts to be distributed to the Buyer in
connection therewith have been so distributed, the Escrow Agent shall distribute
any portion of the remaining Escrow Shares pro rata to the Employee Stockholders
(except to the extent that a Claim resulted from an Employee Stockholder's
breach of a representation or warranty, individually, as opposed to a breach by
the Seller, in which case the distribution to such Employee Stockholder shall be
appropriately reduced).  Upon the resolution of all outstanding Claims
hereunder, the Escrow Agent shall distribute the remaining amount, if any, of
the Escrow Shares pro rata to the Employee Stockholders (except to the extent
that a Claim resulted from an Employee Stockholder's breach of a representation
or warranty, individually, as opposed to a breach by the Seller, in which case
the distribution to such Employee Stockholder shall be appropriately reduced)
and this Agreement shall terminate.  The Escrow Agent shall effect such
distributions of Escrow Shares as it is required to make to the Employee
Stockholders under this Agreement by surrendering such Escrow Shares to the
Buyer's stock transfer agent for cancellation upon receipt by the Escrow Agent
of a copy of a letter from the Buyer to the Buyer's stock transfer agent,
instructing such transfer agent to issue such shares to the Employee
Stockholders.

     7.   The Escrow Agent.
          ---------------- 

          (a)  Notwithstanding anything herein to the contrary, the Escrow Agent
shall promptly dispose of all or any part of the Escrow Shares as directed by a
writing jointly signed by the Stockholder Representative and the Buyer.  The
reasonable fees and expenses of the Escrow Agent in connection with its
execution and performance of this Agreement as set forth on Annex II hereto
shall be borne by the Buyer.  The Escrow Agent shall not be liable for any act
or omission to act under this Agreement, including any and all claims made
against the Escrow Agent as a result of its holding the Escrow Shares in its own
name, except for its own gross negligence or willful misconduct.  The Escrow
Agent shall not be liable for, and the Buyer and the Employee Stockholders shall
jointly and severally indemnify the Escrow Agent against any losses or claims
(including reasonable court costs, attorneys' fees and costs and other out-of-
pocket expenses) arising out of any action taken or omitted in good faith
hereunder.  The Escrow Agent may consult counsel satisfactory to it, including
house counsel, and the advice or opinion of such counsel shall be full and
complete authorization and protection in respect of any action taken, suffered
or omitted by it hereunder in good faith and in accordance with the advice or
opinion of such counsel..  The Escrow Agent may decline to act and shall not be
liable for failure to act if in doubt as to its duties under this Agreement.  In
no event shall the Escrow Agent be liable for indirect, punitive, special or
consequential damages.  The Escrow Agent may act upon any instrument or
signature believed by it to be genuine and may assume that any person purporting
to give any notice or instruction hereunder, reasonably believed by it to be
authorized, has been duly authorized to do so.  The Escrow Agent's duties shall
be determined only with reference to this Agreement and applicable law and the
Escrow Agent is not charged with knowledge of or any duties or responsibilities
in connection with any other document or agreement, including without
limitation, the Merger Agreement.

          (b)  The Escrow Agent shall have the right at any time to resign
hereunder by giving written notice of its resignation to the parties hereto, at
the addresses set forth herein or at such other address as the parties shall
provide, at least thirty (30) days prior to the date specified for such
resignation to take effect.  In such event the Buyer, with the approval of the
Stockholder Representative which will not be unreasonably withheld, shall
appoint a successor escrow agent within that thirty-day period; if the Buyer
does not designate

                                      -6-
<PAGE>
 
a successor escrow agent within such period, the Escrow Agent may appoint a
successor escrow agent or may apply to a court of competent jurisdiction for the
appointment of such successor.  Upon the effective date of such resignation, the
Escrow Shares together with all cash and other property then held by the Escrow
Agent hereunder shall be delivered by it to such successor escrow agent or as
otherwise shall be designated in writing by the Buyer and the Stockholder
Representative.

          (c)  In the event that the Escrow Agent should at any time be
confronted with inconsistent or conflicting claims or demands by the other
parties hereto, the Escrow Agent shall have the right to interplead the parties
in any court of competent jurisdiction and request that such court determine the
respective rights of the parties with respect to this Agreement and, upon doing
so, the Escrow Agent shall be released from any obligations or liability to the
other parties as a consequence of any such claims or demands.

          (d)  The Escrow Agent may execute any of its powers or
responsibilities hereunder and exercise any rights hereunder, either directly or
by or through its agents or attorneys. Nothing in this Agreement shall be deemed
to impose upon the Escrow Agent any duty to qualify to do business or to act as
fiduciary or otherwise in any jurisdiction other than the Commonwealth of
Massachusetts. The Escrow Agent shall not be responsible for and shall not be
under a duty to examine, inquire into or pass upon the validity, binding effect,
execution or sufficiency of this Agreement or of any amendment or supplement
hereto.

          (e)  The Buyer and the Stockholder Representative, jointly and
severally, agree to assume any and all obligations imposed now or hereafter by
any applicable tax law with respect to the payment of Escrow Funds under this
Agreement and to indemnify and hold the Escrow Agent harmless from and against
any taxes, additions for late payment, interest, penalties and other expenses,
that may be assessed against the Escrow Agent on any such payment or other
activities under this Agreement.  The Buyer and Stockholder Representative
undertake to instruct the Escrow Agent in writing with respect to the Escrow
Agent's responsibility for withholding and other taxes, assessments or other
government charges, certifications and governmental reporting in connection with
its acting as Escrow Agent under this Agreement.  The Buyer and Stockholder
Representative, jointly and severally, agree to indemnify and hold the Escrow
Agent harmless from any liability on account of taxes, assessments or other
government charges, including, without limitation, the withholding or deduction
or the failure to withhold or deduct same, and any liability for failure to
obtain proper certifications or to properly report to governmental authorities,
to which the Escrow Agent may be or become subject in connection with or which
arises out of this Agreement, including costs and expenses (including reasonable
legal fees and expenses, interest and penalties.

          (f)  The Escrow Agent shall be entitled to reimbursement on demand for
all expenses incurred in connection with the administration of the escrow
created hereby which are in excess of its compensation for normal services
hereunder, including, without limitation, payment of all legal fees and expenses
incurred by the Escrow Agent in connection with the resolution of any Claim by
any party hereunder.

     8.   Stockholder Representative.
          -------------------------- 

          (a)  In the event the Stockholder Representative shall die or resign
or otherwise terminate his status as such, his successor shall be Chris Evans or
such other person as the Stockholder Representative may appoint. If the
successor Stockholder Representative

                                      -7-
<PAGE>
 
shall die or resign or otherwise terminate his status as such, his successor
shall be any person appointed by such successor Stockholder Representative or,
in the case of the death of the successor Stockholder Representative or his
failure to appoint a successor after a vacancy has been created, elected by the
vote or written consent of a majority in interest of the Employee Stockholders.
All decisions of the Stockholder Representative shall be binding upon the
Employee Stockholders.  The Stockholder Representative shall keep the Employee
Stockholders reasonably informed of his or her material decisions.

          (b)  The Stockholder Representative is authorized to take any action
deemed by him appropriate or necessary to carry out the provisions of, and to
determine the rights of the Employee Stockholders under this Agreement.  The
Stockholder Representative shall serve as the agent of the Employee Stockholders
for all purposes related to this Agreement, including without limitation service
of process upon the Employee Stockholders.  By execution of this Agreement, the
Stockholder Representative accepts and agrees to diligently discharge the duties
and responsibilities of the Stockholder Representative set forth in this
Agreement.  The authorization and designation of the Stockholder Representative
under this Section 8(b) shall be binding upon the successors and assigns of each
Employee Stockholder.  The Buyer and the Escrow Agent shall be entitled to rely
upon such authorization and designation and shall be fully protected in dealing
with the Stockholder Representative, and shall have no duty to inquire into the
authority of any person reasonably believed by any of them to be the Stockholder
Representative.

          (c)  The Stockholder Representative (i) shall not be liable to any of
the Employee Stockholders for any error of judgment, or action taken or omitted
in good faith, or mistake of fact or law unless caused by his own gross
negligence or willful misconduct, (ii) shall be entitled to treat as genuine any
letter or other document furnished to him by the Buyer, the Employee
Stockholders or the Escrow Agent and believed by him to be genuine and to have
been signed and presented by the proper party or parties and (iii) shall be
reimbursed from the proceeds of Escrow Shares otherwise immediately deliverable
to the Employee Stockholders under this Agreement for counsel fees and other
out-of-pocket expenses incurred by the Stockholder Representative in connection
with this Agreement.  Such reimbursement shall be made out of the net proceeds
of Escrow Shares by the Escrow Agent as provided in Section 8(d).  The Employee
Stockholders shall jointly and severally indemnity the Stockholder
Representative against any losses or claims (including reasonable out-of-pocket
expenses) arising out of any action taken or omitted in good faith hereunder.

          (d)  The Stockholder Representative shall not be entitled to any
compensation for services hereunder.  To the extent the Stockholder
Representative shall incur reasonable out-of-pocket costs in the performance of
his duties hereunder, the Stockholder Representative shall be authorized to
direct the Escrow Agent with prior notice to the Buyer to either (i) sell in the
open market that number of Escrow Shares (up to one percent of the Escrow
Shares) sufficient to generate net proceeds to reimburse the Stockholder
Representative for such out-of-pocket costs or (ii) deliver or cause to be
delivered to the Stockholder Representative such number of Escrow Shares (up to
one percent of the Escrow Shares) as are equal to such out-of-pocket costs
divided by the closing price of the Escrow Shares on the business day prior to
such determination.  The Escrow Agent shall have sole discretion as to which of
such methods it will use to effect such reimbursement.

                                      -8-
<PAGE>
 
     9.   Jurisdiction.
          ------------ 

          Each of the parties hereto irrevocably submits to the jurisdiction of
the federal and state courts located in the Commonwealth of Massachusetts and
the State of North Carolina for the purposes of any suit or other proceeding
arising out of the transactions contemplated by this Agreement.  Each of the
parties further agrees to commence any such suit or proceeding only in one of
the federal or state courts located in the Commonwealth of Massachusetts or the
State of North Carolina and to not attempt to transfer such suit or proceeding
to a court outside of the Commonwealth of Massachusetts after such suit has been
commenced.

     10.  Governing Law.  This Agreement is governed by the laws of the
          -------------                                                
Commonwealth of Massachusetts and shall inure to the benefit of and be binding
upon the successors, assigns, heirs and personal representatives of the parties
hereto.

     11.  Counterparts.  This Agreement may be executed in two or more
          ------------                                                
counterparts, all of which documents shall be considered one and the same
document.

     12.  Notices.  Any notice or other communication required or permitted
          -------                                                          
hereunder shall be in writing and shall be deemed given when delivered in
person, by overnight courier, by facsimile transmission (with receipt confirmed
by telephone or by automatic transmission report) or two business days after
being sent by registered or certified mail (postage prepaid, return receipt
requested), as follows:

          To the Buyer:

               CMG Information
               Services, Inc.
               100 Brickstone Square, 1st Floor
               Andover, MA  01810
               Attention:  Chief Financial Officer
               Telephone:  781/684-3660
               Facsimile:  781/684-3172
 
          with a copy to:
 
               Palmer & Dodge LLP
               One Beacon Street
               Boston, MA  02108
               Attention:  William Williams
               Telephone:  617/573-0100
               Facsimile:  617/227-4420
 
          To the Stockholder Representative:
 
               Kip A. Frey
               c/o Accipiter, Inc.
               4000 Wake Forest Road, Suite 200
               Raleigh, NC  27609
               Telephone:   919/872-7755
               Facsimile:   919/872-1714

                                      -9-
<PAGE>
 
          with a copy to:
 
               Hutchison & Mason PLLC
               4011 Westchase Boulevard, Suite 400
               Raleigh, NC  27607
               Attention:   Fred Hutchison
               Telephone:   919/829-9600
               Facsimile:   919/829-9696
 
          To the Escrow Agent:
 
               State Street Bank and Trust Company
               Corporate Trust
               Two International Place
               Boston, MA  02110
               Attention:  Virginia Jones
               Telephone:  617/664-5215
               Facsimile:  617/664-5365

Any party may by notice given in accordance with this section to the other
parties designate another address or person for receipt of notices hereunder.

     13.  Binding Effect.  This Agreement shall be binding upon the respective
          --------------                                           
parties hereto and their heirs, executors, successors and assigns.

     14.  Modifications.  This Agreement may not be altered or modified without
          -------------                                                
the consent of the parties hereto, which consent shall not constitute a waiver
of any of the terms or conditions of this Agreement, unless such waiver is
specified in writing, and then only to the extent so specified. A waiver of any
of the terms and conditions of this Agreement on one occasion shall not
constitute a waiver of the other terms and conditions of this Agreement or of
such terms and conditions on any other occasion.

     15.  Reproduction of Documents.  This Agreement and all documents relating
          -------------------------                                   
thereto, including, without limitation (a) consents, waivers and modifications
which may hereafter be executed, and (b) certificates and other information
previously or hereafter furnished, may be reproduced by any photographic,
photostatic, microfilm, optical disk, micro-card, miniature photographic or
other similar process. The parties hereto agree that any such reproduction shall
be admissible in evidence as the original itself in any judicial or
administrative proceeding, whether or not the original is in existence and
whether or not such reproduction was made by a party in the regular course of
business, and that any enlargement, facsimile or further reproduction shall
likewise be admissible in evidence.

                                      -10-
<PAGE>
 
     IN WITNESS WHEREOF, the parties hereto have executed this Agreement under
seal as of the date first stated above.


                               CMG INFORMATION SERVICES, INC.



                               By /s/ Andrew J. Hajducky III
                                 -----------------------------------------
                                  Name: Andrew J. Hajducky III
                                  Title:  Chief Financial Officer


                               STOCKHOLDER REPRESENTATIVE



                               By /s/ Kip A. Frey
                                 ------------------------------------------  
                                  Kip A. Frey


                               ESCROW AGENT



                               By /s/ Patrick E. Thebado
                                 ------------------------------------------  
                                  Name:  Patrick E. Thebado
                                  Title: Assistant Vice President

                                      -11-
<PAGE>
 
                                    ANNEX I

                              Pro Rata Interests
                              ------------------

<TABLE>
<CAPTION>
Stockholder                                       Number of Shares
- -----------                                       ----------------
<S>                                               <C>
Chris Evans                                            28,545
Alex Herring                                            5,786
Jane Foreman                                            2,314
Keith Bolick                                              160
Scott Bradley                                           1,317
William Burden                                            117
Martin Buskirk                                            171
Douglas Edwards                                            44
Rainy Jepson                                              124
Jeff Jordan                                               129
Richard Kong                                              502
Wendy Kong                                                 73
Tom Kressly                                               161
Sean McClellan                                          1,422
Robert Sands                                            1,453
Kathleen Bagley                                            89
John M. Turner                                             21
Rodrigo DeGuzeman                                          50
George Browning                                           412
Maribeth Roach                                            153
Kip Frey                                                4,596
Leo Guy Taylor                                             82
Roger Edgar                                                47
Marq Mellor                                                11
Phyllis Morris                                             36
Chrisseas Clemons                                          36
Susan Free                                                 25
Ruby Dyer                                                  25
Laura Major                                                25
David Reitmeyer                                            25
Allen Wyke                                                 25
Lauren Cambra                                              25
Dana Wimple                                                25
Brian Handly                                               25
Jeff Wood                                                  25
Graham Best                                                25
Wesley Satterwhite                                         18
                                                             
Total                                                  48,119 
</TABLE>


<PAGE>
 
                                   ANNEX II

                               Escrow Agent Fees
                               -----------------


Acceptance Fee:                    Waived

Administrative Fee:                $2,500.00 per year or part thereof, plus
                                   $35.00 per stockholder

Out-of-Pocket Expenses:            At cost

Legal Fees (Peabody & Arnold)      At cost


<PAGE>
 
                                                                     Exhibit 2.3
                                                                     -----------

 
                   NON-EMPLOYEE STOCKHOLDER ESCROW AGREEMENT

     THIS ESCROW AGREEMENT dated April 8, 1998 (this "Agreement") is among CMG
Information Services, Inc. (the "Buyer"), a Delaware corporation, and Mitch
Mumma, as the representative of the non-employee stockholders (the "Stockholder
Representative") of Accipiter, Inc. (the "Seller"), a Delaware corporation, and
State Street Bank and Trust Company, as escrow agent (the "Escrow Agent").

                                    RECITALS

     A.   Pursuant to an Agreement and Plan of Merger dated the date hereof (the
"Merger Agreement") between the Buyer, the Seller, CMGI Acquisition Corporation
("Acquisition") and certain stockholders of the Seller, the Buyer is acquiring
the Seller through the merger of the Seller into Acquisition (the "Merger").
Capitalized terms used herein and not otherwise defined have the meanings
assigned to them in the Merger Agreement.

     B.   The individuals listed on Annex I (the "Non-Employee Stockholders")
have entered into indemnification agreements dated the date hereof pursuant to
which they have agreed to indemnify the Buyer as provided in Section 10 of the
Merger Agreement and have placed in escrow hereunder a portion of the Merger
Consideration (the "Escrow Shares") as security for such indemnification
obligation.  For purposes of this Agreement, the phrase "pro rata" shall mean in
proportion to each Non-Employee Stockholder's share allocation as set forth in
Annex I.

     NOW, THEREFORE, for good and valuable consideration, the receipt and
sufficiency of which are hereby acknowledged, the parties hereto agree as
follows:

     1.   C/NET, Inc. Warrant.
          ------------------- 

          (a)  If C/NET, Inc. exercises any portion of the 1998 Tranche, the
corresponding portion of the 5,054 shares listed on Annex I as "Reserved for
C/NET, Inc. Warrant" (calculated on a net exercise basis) shall be forfeited to
the Buyer.

          (b)  If this Agreement terminates with C/NET, Inc. not having
exercised any portion of the 1998 Tranche, any shares listed on Annex I as
"Reserved for C/NET, Inc. Warrant" which have not previously forfeited to the
Buyer, shall at such time be forfeited to the Buyer.

          (c)  If C/NET, Inc. exercises any portion of the 1999 Tranche, each
Non-Employee Stockholder shall forfeit Escrow Shares equal to his, her or its
pro rata share of 61.5% of the shares the Buyer must deliver to C/NET, Inc. in
connection with such exercise (calculated on a net exercise basis).

          (d)  If this Agreement terminates with C/NET, Inc. not having
exercised any portion of the 1999 Tranche, each Non-Employee Stockholder shall
forfeit Escrow Shares equal to his, her or its pro rata share of 61.5% of the
shares that would have been deliverable to C/NET, Inc. by the Buyer if the
remaining portion had been exercised (calculated on a net exercise basis) on the
date of termination of this Agreement.

  If C/NET, Inc. shall exercise the portion of the C/NET Warrant which will vest
on February 8, 1999, or if this Agreement shall terminate without such portion
of the C/NET Warrant having
<PAGE>
 
been exercised in full, an individual Non-Employee Stockholder shall forfeit
his, her or its pro rata share of 3,109 Escrow Shares.

     2.   Establishment of Escrow.  The Buyer has delivered to the Escrow Agent
          -----------------------                                              
and the Escrow Agent acknowledges receipt of the Escrow Shares in the form of a
single stock certificate.  The Escrow Shares shall be held in escrow in the name
of the Escrow Agent or its nominee, subject to the terms and conditions set
forth herein.  Unless and until the Escrow Shares are returned to the Buyer or
delivered to Non-Employee Stockholders pursuant to the terms of this Agreement,
the Escrow Agent shall vote the Escrow Shares in accordance with the written
instructions of the Stockholder Representative.

     3.   Amounts Earned on Escrow Shares; Tax Matters.  All cash amounts earned
          --------------------------------------------                          
on the Escrow Shares (cash dividends or other distributions) shall be
distributed pro rata to the Non-Employee Stockholders from time to time upon the
request of the Stockholder Representative.  The parties agree that to the extent
permitted by applicable law, the Non-Employee Stockholders will include all
amounts earned on the Escrow Shares in their gross income (based upon each Non-
Employee Stockholder's pro rata share of the Escrow Shares) for federal, state
and local income tax (collectively, "income tax") purposes and pay any income
tax resulting therefrom.  Any shares of Seller Common Stock, distributed with
respect to the Escrow Shares pursuant to a stock split, stock dividend or other
action shall be treated as Escrow Shares for all purposes.  The parties hereto
agree to provide the Escrow Agent with a certified tax identification number by
signing and returning a Form W-9 (or Form W-8, in the case of non-U.S. persons)
to the Escrow Agent within 30 days from the date hereof.  The parties hereto
understand that, in the event their tax identification numbers are not certified
to the Escrow Agent, the Internal Revenue Code may require withholding of a
portion of any distribution or other income earned on the Escrow Shares in
accordance with the Internal Revenue Code, as amended from time to time.

     4.   Claims Against Escrow Shares.
          ---------------------------- 

          (a)  At any time or times prior to the Expiration Date (as defined
below), the Buyer may make claims (each a "Claim") against the Escrow Shares (i)
for amounts due for indemnification under the Merger Agreement as agreed to by
each Non-Employee Stockholder in an indemnification agreement delivered to the
Buyer on the date hereof or (ii) as specified in Section 1 hereof. The Buyer
shall notify the Stockholder Representative and the Escrow Agent in writing of
each such Claim, including a brief description of the amount and nature of such
Claim and the value per share of the Escrow Shares as set forth in this Section.
Each such notice delivered to the Escrow Agent by the Buyer shall contain a
representation of the Buyer to the effect that the Buyer has delivered a copy of
such notice to the Stockholder Representative prior to or simultaneously with
its delivery to the Escrow Agent. In the event that the amount subject to the
Claim is unliquidated, the Buyer shall make a good faith estimate as to the
amount of the Claim for purposes of determining the number of Escrow Shares, if
any, to be withheld by the Escrow Agent if such Claim is not resolved or
otherwise adjudicated by the Expiration Date. If the Stockholder Representative
disputes such Claim, the Stockholder Representative shall give written notice
thereof to the Buyer and to the Escrow Agent within thirty (30) days after the
date the Buyer's notice of Claim was delivered to the Stockholder
Representative, in which case the Escrow Agent shall continue to hold the Escrow
Shares in accordance with the terms of this Agreement; otherwise, such Claim
shall be deemed to have been acknowledged to be payable in shares out of the
Escrow Shares in the full amount thereof as set forth in the Claim, and the
Escrow Agent shall use its best efforts to pay such Claim from the Escrow Shares
to the Buyer within three (3) business days after expiration of that thirty-day
period. The Escrow Agent shall effect such payment of Escrow Shares to the Buyer
by surrendering such Escrow Shares to the Buyer's transfer agent (Bank of
Boston, c/o Boston EquiServe, L.P., Mail Stop 45-02-09, P. O.

                                      -2-
<PAGE>
 
Box 644, Boston, MA  02102) for cancellation upon receipt by the Escrow Agent of
a copy of a letter from the Buyer to the Buyer's transfer agent, instructing
such transfer agent to issue a new certificate to the Escrow Agent for the
remaining Escrow Shares after giving effect to such payment.  If the amount of
the Claim exceeds the aggregate value of the Escrow Shares, the Escrow Agent
shall have no liability or responsibility for any deficiency.  The value per
share of the Escrow Shares for purposes of this Agreement shall be the closing
price for the Escrow Shares for the ten (10) trading days preceding the date of
the notice by the Buyer of any Claim and such value shall be set forth in any
such notice.  The Escrow Agent may rely conclusively on the per share value set
forth therein for the purpose of determining the amount of shares required to
pay a Claim.  All Claims paid out of the Escrow Shares shall be rounded to the
nearest whole share.  Under no circumstances shall the Non-Employee Stockholders
or the Stockholder Representative have any right to substitute other property
for the Escrow Shares or to change the per share value stated herein.

          (b)  If the Stockholder Representative gives notice to the Buyer and
the Escrow Agent pursuant to Section 4(a) disputing a Claim, no distribution of
the Escrow Shares shall be made by the Escrow Agent to the Buyer or to the Non-
Employee Stockholders of the Set Aside Amount (as defined in Section 5(a)) with
respect to such Claim until either (i) such disputed Claim has been resolved as
evidenced by a written notice executed by the Buyer and the Stockholder
Representative instructing the Escrow Agent as to the distribution of such Set
Aside Amount or portion thereof or (ii) such dispute shall have been adjudicated
in accordance with the arbitration procedures described in Section 5(b).

     5.   Disputed Claims.
          --------------- 

          (a)  If the Stockholder Representative disputes a Claim of the Buyer
as above provided and subject to Section 4, the Escrow Agent shall set aside a
portion of the Escrow Shares equal to the amount of the Claim as set forth in
the notice of the Claim (the "Set Aside Amount"). In the event the Buyer
notifies the Escrow Agent in writing that it has made out-of-pocket expenditures
or anticipates that it will incur legal expenses in connection with any such
disputed Claim with respect to which it is entitled to be indemnified under the
Merger Agreement, a portion of the Escrow Shares equal to such incurred or
anticipated expenditures shall also be set aside and added to and become a part
of the Set Aside Amount, provided that in the event that it shall be agreed (as
evidenced by a written notice executed by the Buyer and the Stockholder
Representative as described in Section 4(b)) or determined through an
arbitration proceeding described in Section 5(b) that the Buyer is not entitled
to indemnification with respect to such Claim, the Buyer shall not be entitled
to such shares.

          (b)  If the Escrow Agent does not receive written notice executed by
the Buyer and the Stockholder Representative within sixty (60) days after the
Stockholder Representative sends notice of such dispute to the effect that the
disputed Claim has been resolved, the Claim shall be referred to an arbitrator
chosen by agreement of the Stockholder Representative and the Buyer. If no
agreement is reached regarding selection of the arbitrator within thirty (30)
days after written request from either party to the other, the Buyer or the
Stockholder Representative may submit the matter in dispute to the American
Arbitration Association (the "Association"), to be settled by arbitration in
Boston, Massachusetts in accordance with the commercial arbitration rules of the
Association. The Buyer and the Stockholder Representative agree to act in good
faith to mutually select an arbitrator. The fees and expenses of any arbitration
shall be borne by the Non-Employee Stockholders and the Buyer in such
proportions as shall be determined by the arbitrator, or if there is no such
determination, then such fees and expenses shall be borne equally by the Non-
Employee Stockholders, on the one hand, and the Buyer, on the other hand. In no
event shall the Escrow Agent or Stockholder Representative (in such capacity) be
responsible for any fees or expenses of any party to any arbitration proceeding.
The

                                      -3-

<PAGE>
 
determination of the arbitrator as to the amount, if any, of the Claim that is
properly allowable shall be conclusive and binding upon the parties hereto and
judgment may be entered thereon in any court having jurisdiction.  The Escrow
Agent shall make payment of such Claim, as and to the extent allowed, to the
Buyer out of the Set Aside Amount within three (3) business days following its
receipt of a copy of the arbitration award determination.

     6.   Termination.  This Agreement shall terminate twelve (12) months after
          -----------                                                          
April 8, 1998 (the "Expiration Date"), provided that there are no outstanding
Claims as to which the Escrow Agent has received notice pursuant to Section 4 on
or prior to the Expiration Date; otherwise this Agreement shall continue in
effect until the resolution of all such Claims for which notice has been
received on or prior to the Expiration Date.  The Buyer shall give the Escrow
Agent prompt written notice of the occurrence of the Expiration Date.  Upon
receipt of such notice or as soon thereafter as is practicable, the Escrow Agent
shall distribute any remaining Escrow Shares less (i) the amount of any then
existing Set Aside Amounts and (ii) the amount specified in any notice of a
Claim delivered to the Escrow Agent on or within thirty (30) days prior to the
Expiration Date with respect to which no Set Aside Amount has yet been
established.  At such time thereafter as any remaining Claim hereunder has been
resolved and the Escrow Agent has received a written notice executed by the
Buyer and the Stockholder Representative to that effect (or a copy of an
arbitration award pursuant to Section 5(b) to that effect) and any amounts to be
distributed to the Buyer in connection therewith have been so distributed, the
Escrow Agent shall distribute any portion of the remaining Escrow Shares pro
rata to the Non-Employee Stockholders (except to the extent that a Claim
resulted from a Non-Employee Stockholder's breach of a representation or
warranty individually, as opposed to a breach by the Seller, in which case the
distribution to such Non-Employee Stockholder shall be appropriately reduced).
Upon the resolution of all outstanding Claims hereunder, the Escrow Agent shall
distribute the remaining amount, if any, of the Escrow Shares pro rata to the
Non-Employee Stockholders (except to the extent that a Claim resulted from a
Non-Employee Stockholder's breach of a representation or warranty individually,
as opposed to a breach by the Seller, in which case the distribution to such
Non-Employee Stockholder shall be appropriately reduced) and this Agreement
shall terminate.  The Escrow Agent shall effect such distributions of Escrow
Shares as it is required to make to the Non-Employee Stockholders under this
Agreement by surrendering such Escrow Shares to the Buyer's stock transfer agent
for cancellation upon receipt by the Escrow Agent of a copy of a letter from the
Buyer to the Buyer's stock transfer agent, instructing such transfer agent to
issue such shares to the Non-Employee Stockholders.

     7.   The Escrow Agent.
          ---------------- 

          (a)  Notwithstanding anything herein to the contrary, the Escrow Agent
shall promptly dispose of all or any part of the Escrow Shares as directed by a
writing jointly signed by the Stockholder Representative and the Buyer. The
reasonable fees and expenses of the Escrow Agent in connection with its
execution and performance of this Agreement as set forth on Annex II hereto
shall be borne by the Buyer. The Escrow Agent shall not be liable for any act or
omission to act under this Agreement, including any and all claims made against
the Escrow Agent as a result of its holding the Escrow Shares in its own name,
except for its own gross negligence or willful misconduct. The Escrow Agent
shall not be liable for, and the Buyer and the Non-Employee Stockholders shall
jointly and severally indemnify the Escrow Agent against any losses or claims
(including reasonable court costs, attorneys' fees and costs and other out-of-
pocket expenses) arising out of any action taken or omitted in good faith
hereunder. The Escrow Agent may consult counsel satisfactory to it, including
house counsel, and the advice or opinion of such counsel shall be full and
complete authorization and protection in respect of any action taken, suffered
or omitted by it hereunder in good faith and in accordance with the advice or
opinion of such counsel. The Escrow Agent may decline to act and shall not be
liable for failure to act if in doubt as to its duties under this Agreement. In
no event shall the Escrow Agent be

                                      -4-
<PAGE>
 
liable for indirect, punitive, special or consequential damages.  The Escrow
Agent may act upon any instrument or signature believed by it to be genuine and
may assume that any person purporting to give any notice or instruction
hereunder, reasonably believed by it to be authorized, has been duly authorized
to do so.  The Escrow Agent's duties shall be determined only with reference to
this Agreement and applicable law and the Escrow Agent is not charged with
knowledge of or any duties or responsibilities in connection with any other
document or agreement, including without limitation, the Merger Agreement.

          (b)  The Escrow Agent shall have the right at any time to resign
hereunder by giving written notice of its resignation to the parties hereto, at
the addresses set forth herein or at such other address as the parties shall
provide, at least thirty (30) days prior to the date specified for such
resignation to take effect. In such event the Buyer, with the approval of the
Stockholder Representative which will not be unreasonably withheld, shall
appoint a successor escrow agent within that thirty-day period; if the Buyer
does not designate a successor escrow agent within such period, the Escrow Agent
may appoint a successor escrow agent or may apply to a court of competent
jurisdiction for the appointment of such successor. Upon the effective date of
such resignation, the Escrow Shares together with all cash and other property
then held by the Escrow Agent hereunder shall be delivered by it to such
successor escrow agent or as otherwise shall be designated in writing by the
Buyer and the Stockholder Representative.

          (c)  In the event that the Escrow Agent should at any time be
confronted with inconsistent or conflicting claims or demands by the other
parties hereto, the Escrow Agent shall have the right to interplead the parties
in any court of competent jurisdiction and request that such court determine the
respective rights of the parties with respect to this Agreement and, upon doing
so, the Escrow Agent shall be released from any obligations or liability to the
other parties as a consequence of any such claims or demands.

          (d)  The Escrow Agent may execute any of its powers or
responsibilities hereunder and exercise any rights hereunder, either directly or
by or through its agents or attorneys. Nothing in this Agreement shall be deemed
to impose upon the Escrow Agent any duty to qualify to do business or to act as
fiduciary or otherwise in any jurisdiction other than the Commonwealth of
Massachusetts. The Escrow Agent shall not be responsible for and shall not be
under a duty to examine, inquire into or pass upon the validity, binding effect,
execution or sufficiency of this Agreement or of any amendment or supplement
hereto.

          (e)  The Buyer and the Stockholder Representative, jointly and
severally, agree to assume any and all obligations imposed now or hereafter by
any applicable tax law with respect to the payment of Escrow Funds under this
Agreement and to indemnify and hold the Escrow Agent harmless from and against
any taxes, additions for late payment, interest, penalties and other expenses,
that may be assessed against the Escrow Agent on any such payment or other
activities under this Agreement. The Buyer and the Stockholder Representative
undertake to instruct the Escrow Agent in writing with respect to the Escrow
Agent's responsibility for withholding and other taxes, assessments or other
government charges, certifications and governmental reporting in connection with
its acting as Escrow Agent under this Escrow Agreement. The Buyer and the
Stockholder Representative, jointly and severally, agree to indemnify and hold
the Escrow Agent harmless from any liability on account of taxes, assessments or
other government charges, including, without limitation, the withholding or
deduction or the failure to withhold or deduct same, and any liability for
failure to obtain proper certifications or to properly report to governmental
authorities, to which the Escrow Agent may be or become subject in connection
with or which arises out of this Agreement, including costs and expenses
(including reasonable legal fees and expenses), interest and penalties.

                                      -5-
<PAGE>
 
          (f)  The Escrow Agent shall be entitled to reimbursement on demand for
all expenses incurred in connection with the administration of the escrow
created hereby which are in excess of its compensation for normal services
hereunder, including, without limitation, payment of all legal fees and expenses
incurred by the Escrow Agent in connection with the resolution of any Claim by
any party hereunder.

     8.   Stockholder Representative.
          -------------------------- 

          (a)  In the event the Stockholder Representative shall die or resign
or otherwise terminate his status as such, his successor shall be Frank Dalton
or such other person as the Stockholder Representative may appoint. If the
successor Stockholder Representative shall die or resign or otherwise terminate
his status as such, his successor shall be any person appointed by such
successor Stockholder Representative or, in the case of the death of the
successor Stockholder Representative or his failure to appoint a successor after
a vacancy has been created, elected by the vote or written consent of a majority
in interest of the Non-Employee Stockholders. All decisions of the Stockholder
Representative shall be binding upon the Non-Employee Stockholders. The
Stockholder Representative shall keep the Non-Employee Stockholders reasonably
informed of his material decisions.

          (b)  The Stockholder Representative is authorized to take any action
deemed by him appropriate or necessary to carry out the provisions of, and to
determine the rights of the Non-Employee Stockholders under this Agreement. The
Stockholder Representative shall serve as the agent of the Non-Employee
Stockholders for all purposes related to this Agreement, including without
limitation service of process upon the Non-Employee Stockholders. By execution
of this Agreement, the Stockholder Representative accepts and agrees to
diligently discharge the duties and responsibilities of the Stockholder
Representative set forth in this Agreement. The authorization and designation of
the Stockholder Representative under this Section 8(b) shall be binding upon the
successors and assigns of each Non-Employee Stockholder. The Buyer and the
Escrow Agent shall be entitled to rely upon such authorization and designation
and shall be fully protected in dealing with the Stockholder Representative, and
shall have no duty to inquire into the authority of any person reasonably
believed by any of them to be the Stockholder Representative.

          (c)  The Stockholder Representative (i) shall not be liable to any of
the Non-Employee Stockholders for any error of judgment, or action taken or
omitted in good faith, or mistake of fact or law unless caused by his own gross
negligence or willful misconduct, (ii) shall be entitled to treat as genuine any
letter or other document furnished to him by the Buyer, the Non-Employee
Stockholders or the Escrow Agent and believed by him to be genuine and to have
been signed and presented by the proper party or parties and (iii) shall be
reimbursed from the proceeds of Escrow Shares otherwise immediately deliverable
to the Non-Employee Stockholders under the Escrow Agreement for counsel fees and
other out-of-pocket expenses incurred by the Stockholder Representative in
connection with this Agreement. Such reimbursement shall be made out of the net
proceeds of Escrow Shares by the Escrow Agent as provided in Section 8(d). The
Non-Employee Stockholders shall jointly and severally indemnify the Stockholder
Representative against any losses or claims (including reasonable out-of-pocket
expenses) arising out of any action taken or omitted in good faith hereunder.

          (d)  The Stockholder Representative shall not be entitled to any
compensation for services hereunder.  To the extent the Stockholder
Representative shall incur reasonable out-of-pocket costs in the performance of
his duties hereunder, the Stockholder Representative shall be authorized to
direct the Escrow Agent with prior notice to the Buyer to either (i) sell in the
open market that number of Escrow Shares (up to one percent of the Escrow
Shares) sufficient to generate net proceeds to reimburse the Stockholder
Representative for such out-of-pocket costs or

                                      -6-
<PAGE>
 
(ii) deliver or cause to be delivered to the Stockholder Representative such
number of Escrow Shares (up to one percent of the Escrow Shares) as are equal to
such out-of-pocket costs divided by the closing price of the Escrow Shares on
the business day prior to such determination.  The Escrow Agent shall have sole
discretion as to which of such methods it will use to effect such reimbursement.

     9.   Jurisdiction.
          ------------ 

          Each of the parties hereto irrevocably submits to the jurisdiction of
the federal and state courts located in the Commonwealth of Massachusetts and
the State of North Carolina for the purposes of any suit or other proceeding
arising out of the transactions contemplated by this Agreement. Each of the
parties further agrees to commence any such suit or proceeding only in one of
the federal or state courts located in the Commonwealth of Massachusetts or the
State of North Carolina and to not attempt to transfer such suit or proceeding
to a court outside of the Commonwealth of Massachusetts or the State of North
Carolina after such suit has been commenced.

     10.  Governing Law.  This Agreement is governed by the laws of the
          -------------                                                
Commonwealth of Massachusetts, and shall inure to the benefit of and be binding
upon the successors, assigns, heirs and personal representatives of the parties
hereto.

     11.  Counterparts.  This Agreement may be executed in two or more
          ------------                                                
counterparts, all of which documents shall be considered one and the same
document.

     12.  Notices.  Any notice or other communication required or permitted
          -------                                                          
hereunder shall be in writing and shall be deemed given when delivered in
person, by overnight courier, by facsimile transmission (with receipt confirmed
by telephone or by automatic transmission report) or two business days after
being sent by registered or certified mail (postage prepaid, return receipt
requested), as follows:

          To the Buyer:

                 CMG Information Services, Inc.
                 100 Brickstone Square, 1st Floor
                 Andover, MA 01810
                 Attention:   Chief Financial Officer
                 Telephone:   781/684-3660
                 Facsimile:   781/684-3172
 
         with a copy to:
 
                 Palmer & Dodge LLP
                 One Beacon Street
                 Boston, MA 02108
                 Attention:  William Williams
                 Telephone:  617/573-0100
                 Facsimile:  617/227-4420

                                      -7-
<PAGE>
 
          To the Stockholder Representative:
 
                 Mitch Mumma  
                 Intersouth Partners             
                 1000 Park Forty Plaza, Suite 290
                 Durham, NC 27713     
                 Telephone:  919/544-6473
                 Facsimile:  919/544-6645 
 
          with a copy to:
 
                 Hutchison & Mason PLLC                    
                 4011 Westchase Boulevard, Suite 400       
                 Raleigh, NC 27607                        
                 Attention:   Fred Hutchison                    
                 Telephone:   919/829-9600
                 Facsimile:   919/829-9696 
 
          To the Escrow Agent:
 
                 State Street Bank and Trust Company        
                 Corporate Trust                            
                 Two International Place                    
                 Boston, MA 02110                          
                 Attention:  Virginia Jones                    
                 Telephone:  617/664-5215
                 Facsimile:  617/664-5365 

Any party may by notice given in accordance with this section to the other
parties designate another address or person for receipt of notices hereunder.

     13.  Binding Effect.  This Agreement shall be binding upon the respective
          --------------                                                      
parties hereto and their heirs, executors, successors and assigns.

     14.  Modifications.  This Agreement may not be altered or modified without
          -------------                                                        
the consent of the parties hereto, which consent shall not constitute a waiver
of any of the terms or conditions of this Agreement, unless such waiver is
specified in writing, and then only to the extent so specified.  A waiver of any
of the terms and conditions of this Agreement on one occasion shall not
constitute a waiver of the other terms and conditions of this Agreement or of
such terms and conditions on any other occasion.

     15.  Reproduction of Documents.  This Agreement and all documents relating
          -------------------------                                            
thereto, including, without limitation (a) consents, waivers and modifications
which may hereafter be executed, and (b) certificates and other information
previously or hereafter furnished, may be reproduced by any photographic,
photostatic, microfilm, optical disk, micro-card, miniature photographic or
other similar process.  The parties hereto agree that any such reproduction
shall be admissible in evidence as the original itself in any judicial or
administrative proceeding, whether or not the original is in existence and
whether or not such reproduction was made by a party in the regular course of
business, and that any enlargement, facsimile or further reproduction shall
likewise be admissible in evidence.

                                      -8-
<PAGE>
 
         [SIGNATURE PAGE TO NON-EMPLOYEE STOCKHOLDER ESCROW AGREEMENT]
 
     IN WITNESS WHEREOF, the parties hereto have executed this Agreement under
seal as of the date first stated above.


                               CMG INFORMATION SERVICES, INC.



                               By /s/ Andrew J. Hajducky III
                                 --------------------------------------  
                                  Name: Andrew J. Hajducky III
                                  Title:  President


                               STOCKHOLDER REPRESENTATIVE



                               By /s/ Mitch Mumma
                                 --------------------------------------  
                                  Mitch Mumma



                               ESCROW AGENT



                               By /s/ Patrick E. Thebado 
                                 --------------------------------------  
                                  Name:  Patrick E. Thebado 
                                  Title: Assistant VIce President

                                      -9-
<PAGE>
 
                                    ANNEX I

                              Pro Rata Interests
                              ------------------

<TABLE>
<CAPTION>
Stockholder                                       Number of Shares
- -----------                                       ----------------
<S>                                               <C>
Intersouth III                                              19,987
Aurora Ventures                                              1,755
Aurora Ventures II                                           1,755
Edward Fadel                                                   351
Paul Mayer                                                     351
Alex Thorpe                                                    175
Paul Rasmussen                                                 873
Gray Ventures                                                  702
Tri-State Investment                                         3,449
Southeast Interactive                                        1,755
Cordova Capital                                              7,023
Don Rainey                                                     101
Claire Roise                                                   205
Reserved for C/NET, Inc. Warrant                             5,054
                                                                  
Totals                                                      43,536 
</TABLE>
<PAGE>
 
                                   ANNEX II

                               Escrow Agent Fees
                               -----------------


Acceptance Fee:                               Waived

Administrative Fee:                           $2,500.00 per year or part
                                              thereof, plus $35.00 per
                                              stockholder

Out-of-Pocket Expenses:                       At cost

Legal Fees (Peabody & Arnold)                 At cost

<PAGE>
 
                                                                     Exhibit 2.4
                                                                     -----------

 
                      EMPLOYEE INVESTMENT REPRESENTATION
                             AND LOCKUP AGREEMENT


CMG Information Services, Inc.
100 Brickstone Square
1st Floor
Andover, MA  01938

     Re:  Proposed issuance of shares (the "Shares") of CMG Information
          Services, Inc. (the "Buyer") Common Stock, $0.01 par value per share
          (the "Common Stock"), in connection with the merger (the "Merger") of
          Accipiter, Inc. (the "Seller") and CMGI Acquisition Corporation
          ("Acquisition")

Ladies and Gentlemen:

     In connection with the proposed issuance of the Shares in the Merger, the
undersigned (the "Investor") hereby represents, warrants and agrees as follows:

     1.   The Investor has received and has had the opportunity to review
          certain information relating to the Buyer and the Merger, including,
          without limitation, copies of the following agreements and exhibits
          related to the Merger and the following statements and reports filed
          by the Buyer with the Securities and Exchange Commission (the
          "Commission"):

          (a)  Form of Agreement and Plan of Merger dated April 8, 1998, among
               the Buyer, Acquisition, the Seller and certain stockholders of
               the Seller (the "Merger Agreement"), including the exhibits and
               schedules attached thereto;

          (b)  The Buyer's Annual Report to Stockholders for the year ended July
               31, 1997;

          (c)  The Buyer's Quarterly Report on Form 10-Q for the quarter ended
               January 31, 1998;

          (d)  The Buyer's Current Report on Form 8-K filed with the Commission
               on December 29, 1997;

          (e)  The Buyer's Proxy Statement, as filed with the Commission on
               November 12, 1997, for its Annual Meeting of Stockholders held on
               December 18, 1997.

     2.   The Investor has checked the box below if he, she or it is an
          "Accredited Investor," as such term is defined in Section 501(a) or
          Regulation D
<PAGE>
 
          ("Regulation D") of the rules and regulations promulgated under the
          Securities Act of 1933, as amended (the "Securities Act").  If the
          Investor is not an Accredited Investor, he, she or it represents and
          warrants that either alone or with his, her or its purchaser
          representative(s) (as such term is defined in Section 501(h) of
          Regulation D) has such knowledge and experience in financial and
          business matters that he, she or it is capable of evaluating the
          merits and risks of the Merger and a prospective investment in the
          Shares.

          "Accredited Investor shall mean any person who comes within any of the
          following categories,

          (a)  Any bank as defined in Section 3(a)(2) of the Securities Act or
               any savings and loan association or other institution as defined
               in Section 3(a)(5)(A) of the Securities Act whether acting in its
               individual or fiduciary capacity; any broker or dealer registered
               pursuant to Section 15 of the Securities Exchange Act of 1934, as
               amended; any insurance company as defined in Section 2(13) of the
               Securities Act; any investment company registered under the
               Investment Company Act of 1940, as amended, or a business
               development company as defined in Section 2(a)(48) of the
               Securities Act; any Small Business Investment Company licensed by
               the U.S. Small Business Administration under Section 301(c) or
               (d) of the Small Business Investment Act of 1958, as amended; any
               plan established and maintained by a state, its political
               subdivisions, or any agency or instrumentality of a state or its
               political subdivisions, for the benefit of its employees, if such
               plan has total assets in excess of $5,000,000; any employee
               benefit plan within the meaning of the Employee Retirement Income
               Security Act of 1974, as amended, if the investment decision is
               made by a plan fiduciary, as defined in Section 3(21) of such
               Act, which is either a bank, savings and loan association,
               insurance company, or registered investment advisor, or if the
               employee benefit plan has total assets in excess of $5,000,000,
               or, if a self-directed plan, with investment decisions made
               solely by persons that are Accredited Investors;

          (b)  Any private business development company as defined in Section
               202(a)(22) of the Investment Advisers Act of 1940, as amended;

          (c)  Any organization described in Section 501(c)(3) of the Internal
               Revenue Code of 1986, as amended, corporation, Massachusetts or
               similar business trust, or partnership, not formed for the
               specific purpose of acquiring the securities offered, with total
               assets in excess of $5,000,000;

          (d)  Any director, executive officer, or general partner of the issuer
               of the securities being offered or sold, or any director,
               executive officer, or general partner of a general partner of
               that issuer;

                                      -2-
<PAGE>
 
          (e)  Any natural person whose individual net worth, or joint net worth
               with that person's spouse, at the time of his purchase exceeds
               $1,000,000;

          (f)  Any natural person who had an individual income in excess of
               $200,000 in each of the two most recent years or joint income
               with that person's spouse in excess of $300,000 in each of those
               years and has a reasonable expectation of reaching the same
               income level in the current year;

          (g)  Any trust with total assets in excess of $5,000,000, not formed
               for the specific purpose of acquiring the securities offered,
               whose purchase is directed by a sophisticated person who meets
               the definition of a "purchaser representative" found in Rule
               501(h) of Regulation D; and

          (h)  Any entity in which all of the equity owners are Accredited
               Investors.

          [-]  The Investor represents and warrants that he, she or it is an
               "Accredited Investor."

          If the Investor has engaged a purchaser representative, the Investor
          has checked the following box and indicated the name of such purchaser
          representative.

          [-]  __________________________

          The Investor has also attached all disclosure materials provided by
          such purchaser representative to the Investor describing any material
          relationship between the purchaser representative or his affiliates
          and the Buyer or its affiliates that then exists, that is mutually
          understood to be contemplated, or that has existed at any time during
          the previous two years, and any compensation received or to be
          received as a result of such relationship.

     3.   The Investor has had an opportunity for a reasonable period of time to
          ask questions of and receive answers from the Buyer concerning the
          Buyer, the Shares and the terms and conditions of the transactions
          contemplated by the Merger, and the Investor has had an opportunity to
          obtain any additional information the Investor considered necessary to
          verify the accuracy of the information furnished in the documents
          listed in Section 1 above.

     4.   Any Shares issued in the Merger that are distributed to the Investor
          will be so acquired by he, she or it for his, her or its own account
          and not on behalf of any other person.  The Investor will be so
          acquiring the Shares for investment and not for distribution or with
          the intent to divide his, her or its participation with others or of
          selling, assigning, transferring or otherwise disposing of the Shares.
          It is understood that the Investor may make bona fide gifts or
          distributions (including, if the Investor is a partnership, to its
          partners) without

                                      -3-
<PAGE>
 
          consideration or transfers by operation of law, so long as any donee
          or transferee agrees not to sell, transfer or otherwise dispose of the
          Shares except as provided herein.

     5.   The Investor understands that:

          (a)  The Shares have not been registered by the Buyer under the
               Securities Act or any applicable state securities laws (the
               "State Acts"), and, therefore, the Shares cannot be sold or
               otherwise transferred unless either they are registered under the
               Securities Act and any applicable State Acts or an exemption from
               such registration is available.

               The Buyer has not made any representations to me that it will
               register the Shares under the Securities Act or the State Acts,
               except in the Registration Rights Agreement dated the date
               hereof.

          (b)  The certificates evidencing the Shares will include the legend
               set forth below, which the Investor has read and understands:

               THE SECURITIES REPRESENTED HEREBY HAVE NOT BEEN REGISTERED UNDER
               THE SECURITIES ACT OF 1933, AS AMENDED, OR ANY STATE SECURITIES
               LAWS, AND MAY NOT BE OFFERED, SOLD, TRANSFERRED OR OTHERWISE
               DISPOSED OF UNLESS REGISTERED UNDER THE SECURITIES ACT OF 1933,
               AS AMENDED, AND ANY APPLICABLE STATE SECURITIES LAWS OR AN
               EXEMPTION FROM SUCH REGISTRATION IS AVAILABLE.  THESE SECURITIES
               ARE ALSO SUBJECT TO AN INVESTMENT REPRESENTATION AND LOCKUP
               AGREEMENT WITH THE CORPORATION WHICH RESTRICTS THE TRANSFER
               THEREOF, A COPY OF WHICH CAN BE OBTAINED FROM THE CORPORATION AT
               ITS EXECUTIVE OFFICES.

          (c)  By accepting the certificates bearing the aforesaid legend, the
               Investor agrees, prior to any transfer of the Shares represented
               by the Certificates, to give written notice to the Buyer
               expressing his, her or its desire to effect such transfer and
               describing briefly the proposed transfer.  Upon receiving such
               notice, the Buyer shall present copies thereof to its counsel and
               the following provisions shall apply:

                    (i) if, in the reasonable opinion of counsel acceptable to
               the Buyer, the proposed transfer of such Shares may be effected
               without registration of such Shares under the Securities Act and
               the State Acts, the Buyer shall promptly thereafter notify the
               stockholder desiring to transfer such Shares, whereupon such
               stockholder shall be entitled to transfer such Shares, all in
               accordance with the terms of the notice delivered by such
               stockholder to the Buyer and upon such further terms

                                      -4-
<PAGE>
 
               and conditions as shall be required by the Buyer to ensure
               compliance with the Securities Act and the State Acts, and the
               Buyer will deliver, upon surrender of the certificate evidencing
               such Shares, in exchange therefor, a new certificate not bearing
               a legend of the character set forth above if such counsel
               reasonably believes that such legend is no longer required under
               the Securities Act and the State Acts; and

                    (ii) if, in the reasonable opinion of such counsel, the
               proposed transfer of such Shares may not be effected without
               registration of such Shares under the Securities Act and the
               State Acts, a copy of such opinion shall be promptly delivered to
               the stockholder who has proposed such transfer, and such proposed
               transfer shall not be made unless such registration is then in
               effect.

          (d)  The Buyer may, from time to time, make stop transfer notations in
               its records and deliver stop transfer instructions to its
               transfer agent to the extent counsel for the Buyer considers it
               necessary to ensure compliance with the Securities Act and the
               State Acts.

     6.   The Investor has knowledge and experience in financial and business
          matters, know of the high degree of risk associated with investments
          generally, is capable of evaluating the merits and risks of an
          investment in the Shares and is able to bear the economic risk of an
          investment in the Shares in the amount contemplated.  The Investor has
          adequate means of providing for his, her or its current financial
          needs and contingencies and will have no current or anticipated future
          needs for liquidity which would be jeopardized by the investment in
          the Shares.  THE INVESTOR CAN AFFORD A COMPLETE LOSS OF HIS, HER OR
          ITS INVESTMENT IN THE SHARES.

     7.   The Investor understands that an investment in the Shares involves a
          substantial degree or risk, including, without limitation, matters
          discussed under the caption "Management's Discussion and Analysis of
          Financial Condition and Results of Operations" in the Report on Form
          10-Q for January 31, 1998.  No representation has been made regarding
          the future performance of the Buyer or the future market value of the
          Shares.

     8.   In order to induce the Buyer to enter into the Merger Agreement, the
          Investor hereby agrees that he, she or it will not, except with the
          prior written approval of the Buyer, directly or indirectly offer to
          sell, contract to sell or otherwise sell or dispose of any of the
          Shares, or engage in any other transaction which reduces the risks of
          ownership), for a period of six (6) months from the date hereof with
          respect to one hundred percent (100%) of the Shares, for a period of
          twelve (12) months from the date hereof with respect to ninety percent
          (90%) of the Shares and for a period of twenty-four (24) months from
          the date hereof with respect to forty-five percent (45%) of the
          Shares; provided, however, arrangements designed to limit normal
          market risk (such as a collar) are permitted so long as such
          arrangement does not adversely affect the

                                      -5-
<PAGE>
 
          exemption from registration under the Securities Act relied upon by
          the Buyer in connection with its issuing the Shares in the Merger.
          The Investor agrees and consents to the entry of stop transfer
          instructions with the Buyer's transfer agent against the transfer of
          Shares held by the Investor except in compliance with the foregoing
          restrictions.

     9.   The Investor recognizes that the issuance of Shares will be based to a
          material extent upon his, her or its representations, warranties and
          agreements set forth in this Agreement, and the Investor agrees on
          demand to indemnify and hold harmless the Buyer and each officer,
          director, stockholder, employee and affiliate thereof from and against
          any and all loss, damage, liability or expense, including costs and
          reasonable attorneys' fees, to which they may be put or which they may
          incur by reason of, or in connection with, any misrepresentation the
          Investor has made in this Agreement, any breach by the Investor of any
          agreement contained in this Agreement, or arising out of the
          Investor's sale or distribution of any Shares in violation of the
          Securities Act, the State Acts or this Agreement.  All
          representations, warranties and covenants and the indemnification
          contained in this Agreement shall survive this Agreement and the
          Investor's admission as a stockholder of the Buyer.

     10.  This Agreement, together with the Registration Rights Agreement dated
          the date hereof, constitutes the entire agreement between the parties
          hereto with respect to the subject matter hereof, and this Agreement
          supersedes all prior agreements, understandings and arrangements, if
          any, whether oral or written, between the parties hereto with respect
          to the subject mater hereof.  The provisions of the Agreement shall be
          deemed severable and the invalidity or unenforceability of any
          provision shall not affect the validity or enforceability of the other
          provisions hereof.  No provisions of this Agreement shall be amended
          without the express written consent of the parties hereto.

                                      -6-
<PAGE>
 
             [SIGNATURE PAGE TO EMPLOYEE INVESTMENT REPRESENTATION
                             AND LOCKUP AGREEMENT]

     11.  This Agreement shall be governed by and construed and enforced in
          accordance with the laws of the State of Delaware without giving
          effect to the conflict of laws principles thereof.

                              Sincerely,

                              

                              ---------------------------------------   
                              (Name of Investor)
                                   


                              ---------------------------------------
                              (Signature of Investor or Authorized Signatory)


                              _______________________________________ 
                              (Print Name of Authorized Signatory, if
                              applicable)

 
                              _______________________________________   
                              (Authorized Signatory's Capacity, if applicable)


Date:  April 8, 1998
<PAGE>
 
     The following persons have signed an Employee Stockholder Investment 
Representation and Lock-up Letter:

Ashley, Charles
Bagley, Kathleen
Bolick, Keith
Bradley, Scott
Browning, George R.
Burden, William C.
Buskirk, Martin C.
DeGuzman, Rodrigo
Edgar, Roger
Edwards, Douglas E.
Evans, Christopher
Foreman, Jane D.
Frey, Kip
Herring, Alexander M.
Jepson, Laraine
Jordan, Jeff
Kong, Kimo
Kong, Wendy
Kressley, Tom
Mellor, Marq
McClellan, Sean
Roach, Maribeth
Sands, Chip
Sands, Robert G.
Taylor, Guy
Turner, John, M.



<PAGE>
 
                                                                     Exhibit 2.5
                                                                     -----------



 
                    NON-EMPLOYEE INVESTMENT REPRESENTATION
                             AND LOCKUP AGREEMENT



CMG Information Services, Inc.
100 Brickstone Square
1st Floor
Andover, MA 01938

     Re:  Proposed issuance of shares (the "Shares") of CMG Information
          Services, Inc. (the "Buyer") Common Stock, $0.01 par value per share
          (the "Common Stock"), in connection with the merger (the "Merger") of
          Accipiter, Inc. (the "Seller") and CMGI Acquisition Corporation
          ("Acquisition")

Ladies and Gentlemen:

     In connection with the proposed issuance of the Shares in the Merger, the
undersigned (the "Investor") hereby represents, warrants and agrees as follows:

     1.   The Investor has received and has had the opportunity to review
          certain information relating to the Buyer and the Merger, including,
          without limitation, copies of the following agreements and exhibits
          related to the Merger and the following statements and reports filed
          by the Buyer with the Securities and Exchange Commission (the
          "Commission"):

          (a)  Form of Agreement and Plan of Merger dated [April 8], 1998, among
               the Buyer, Acquisition, the Seller and certain stockholders of
               the Seller (the "Merger Agreement"), including the exhibits and
               schedules attached thereto;

          (b)  The Buyer's Annual Report to Stockholders for the year ended July
               31, 1997;

          (c)  The Buyer's Quarterly Report on Form 10-Q for the quarter ended
               January 31, 1998;

          (d)  The Buyer's Current Report on Form 8-K filed with the Commission
               on December 29, 1997;

          (e)  The Buyer's Proxy Statement, as filed with the Commission on
               November 12, 1997, for its Annual Meeting of Stockholders held on
               December 18, 1997.

     2.   The Investor has checked the box below if he, she or it is an
          "Accredited Investor," as such term is defined in Section 501(a) or
          Regulation D
<PAGE>
 
          ("Regulation D") of the rules and regulations promulgated under the
          Securities Act of 1933, as amended (the "Securities Act").  If the
          Investor is not an Accredited Investor, he, she or it represents and
          warrants that either alone or with his, her or its purchaser
          representative(s) (as such term is defined in Section 501(h) of
          Regulation D) has such knowledge and experience in financial and
          business matters that he, she or it is capable of evaluating the
          merits and risks of the Merger and a prospective investment in the
          Shares.

          "Accredited Investor shall mean any person who comes within any of the
          following categories,

          (a)  Any bank as defined in Section 3(a)(2) of the Securities Act, or
               any savings and loan association or other institution as defined
               in Section 3(a)(5)(A) of the Securities Act whether acting in its
               individual or fiduciary capacity; any broker or dealer registered
               pursuant to Section 15 of the Securities Exchange Act of 1934, as
               amended; any insurance company as defined in Section 2(13) of the
               Securities Act; any investment company registered under the
               Investment Company Act of 1940, as amended, or a business
               development company as defined in Section 2(a)(48) of the
               Securities Act; any Small Business Investment Company licensed by
               the U.S. Small Business Administration under Section 301(c) or
               (d) of the Small Business Investment Act of 1958, as amended; any
               plan established and maintained by a state, its political
               subdivisions, or any agency or instrumentality of a state or its
               political subdivisions, for the benefit of its employees, if such
               plan has total assets in excess of $5,000,000; any employee
               benefit plan within the meaning of the Employee Retirement Income
               Security Act of 1974, as amended, if the investment decision is
               made by a plan fiduciary, as defined in Section 3(21) of such
               Act, which is either a bank, savings and loan association,
               insurance company, or registered investment advisor, or if the
               employee benefit plan has total assets in excess of $5,000,000,
               or, if a self-directed plan, with investment decisions made
               solely by persons that are Accredited Investors;

          (b)  Any private business development company as defined in Section
               202(a)(22) of the Investment Advisers Act of 1940, as amended;

          (c)  Any organization described in Section 501(c)(3) of the Internal
               Revenue Code of 1986, as amended, corporation, Massachusetts or
               similar business trust, or partnership, not formed for the
               specific purpose of acquiring the securities offered, with total
               assets in excess of $5,000,000;

          (d)  Any director, executive officer, or general partner of the issuer
               of the securities being offered or sold, or any director,
               executive officer, or general partner of a general partner of
               that issuer;

                                      -2-
<PAGE>
 
          (e)  Any natural person whose individual net worth, or joint net worth
               with that person's spouse, at the time of his purchase exceeds
               $1,000,000;

          (f)  Any natural person who had an individual income in excess of
               $200,000 in each of the two most recent years or joint income
               with that person's spouse in excess of $300,000 in each of those
               years and has a reasonable expectation of reaching the same
               income level in the current year;

          (g)  Any trust with total assets in excess of $5,000,000, not formed
               for the specific purpose of acquiring the securities offered,
               whose purchase is directed by a sophisticated person who meets
               the definition of a "purchaser representative" found in Rule
               501(h) of Regulation D; and

          (h)  Any entity in which all of the equity owners are Accredited
               Investors.

          [_]  The Investor represents and warrants that he, she or it is an
               "Accredited Investor."

          If the Investor has engaged a purchaser representative, the Investor
          has checked the following box and indicated the name of such purchaser
          representative.

          [_]  __________________________

          The Investor has also attached all disclosure materials provided by
          such purchaser representative to the Investor describing any material
          relationship between the purchaser representative or his affiliates
          and the Buyer or its affiliates that then exists, that is mutually
          understood to be contemplated or that has existed at any time during
          the previous two years, and any compensation received or to be
          received as a result of such relationship.

     3.   The Investor has had an opportunity for a reasonable period of time to
          ask questions of and receive answers from the Buyer concerning the
          Buyer, the Shares and the terms and conditions of the transactions
          contemplated by the Merger, and the Investor has had an opportunity to
          obtain any additional information he, she or it considered necessary
          to verify the accuracy of the information furnished in the documents
          listed in Section 1 above.

     4.   Any Shares issued in the Merger that are distributed to the Investor
          will be so acquired by he, she or it for his, her or its own account
          and not on behalf of any other person.  The Investor will be so
          acquiring the Shares for investment and not for distribution or with
          the intent to divide his, her or its participation with others or of
          selling, assigning, transferring or otherwise disposing of the Shares.
          It is understood that the Investor may make bona fide gifts or
          distributions (including, if the Investor is a partnership, to its
          partners) without

                                      -3-
<PAGE>
 
          consideration or transfers by operation of law, so long as any donee
          or transferee agrees not to sell, transfer or otherwise dispose of the
          Shares except as provided herein.

     5.   The Investor understands that:

          (a)  The Shares have not been registered by the Buyer under the
               Securities Act or any applicable state securities laws (the
               "State Acts"), and, therefore, the Shares cannot be sold or
               otherwise transferred unless either they are registered under the
               Securities Act and any applicable State Acts or an exemption from
               such registration is available.

               The Buyer has not made any representations to me that it will
               register the Shares under the Securities Act or the State Acts,
               except in the Registration Rights Agreement dated the date
               hereof.

          (b)  The certificates evidencing the Shares will include the legend
               set forth below, which the Investor has read and understands:

               THE SECURITIES REPRESENTED HEREBY HAVE NOT BEEN REGISTERED UNDER
               THE SECURITIES ACT OF 1933, AS AMENDED, OR ANY STATE SECURITIES
               LAWS, AND MAY NOT BE OFFERED, SOLD, TRANSFERRED OR OTHERWISE
               DISPOSED OF UNLESS REGISTERED UNDER THE SECURITIES ACT OF 1933,
               AS AMENDED, AND ANY APPLICABLE STATE SECURITIES LAWS OR AN
               EXEMPTION FROM SUCH REGISTRATION IS AVAILABLE.  THESE SECURITIES
               ARE ALSO SUBJECT TO AN INVESTMENT REPRESENTATION AND LOCKUP
               AGREEMENT WITH THE CORPORATION WHICH RESTRICTS THE TRANSFER
               THEREOF, A COPY OF WHICH CAN BE OBTAINED FROM THE CORPORATION AT
               ITS EXECUTIVE OFFICES.

          (c)  By accepting the certificates bearing the aforesaid legend, the
               Investor agrees, prior to any transfer of the Shares represented
               by the Certificates, to give written notice to the Buyer
               expressing his, her or its desire to effect such transfer and
               describing briefly the proposed transfer.  Upon receiving such
               notice, the Buyer shall present copies thereof to its counsel and
               the following provisions shall apply:

                    (i) if, in the reasonable opinion of counsel acceptable to
               the Buyer, the proposed transfer of such Shares may be effected
               without registration of such Shares under the Securities Act and
               the State Acts, the Buyer shall promptly thereafter notify the
               stockholder desiring to transfer such Shares, whereupon such
               stockholder shall be entitled to transfer such Shares, all in
               accordance with the terms of the notice delivered by such
               stockholder to the Buyer and upon such further terms

                                      -4-
<PAGE>
 
               and conditions as shall be required by the Buyer to ensure
               compliance with the Securities Act and the State Acts, and the
               Buyer will deliver, upon surrender of the certificate evidencing
               such Shares, in exchange therefor, a new certificate not bearing
               a legend of the character set forth above if such counsel
               reasonably believes that such legend is no longer required under
               the Securities Act and the State Acts; and

                    (ii) if, in the reasonable opinion of such counsel, the
               proposed transfer of such Shares may not be effected without
               registration of such Shares under the Securities Act and the
               State Acts, a copy of such opinion shall be promptly delivered to
               the stockholder who has proposed such transfer, and such proposed
               transfer shall not be made unless such registration is then in
               effect.

          (d)  The Buyer may, from time to time, make stop transfer notations in
               its records and deliver stop transfer instructions to its
               transfer agent to the extent counsel for the Buyer considers it
               necessary to ensure compliance with the Securities Act and the
               State Acts.

     6.   The Investor has knowledge and experience in financial and business
          matters, know of the high degree of risk associated with investments
          generally, is capable of evaluating the merits and risks of an
          investment in the Shares and is able to bear the economic risk of an
          investment in the Shares in the amount contemplated.  The Investor has
          adequate means of providing for his, her or its current financial
          needs and contingencies and will have no current or anticipated future
          needs for liquidity which would be jeopardized by the investment in
          the Shares.  THE INVESTOR CAN AFFORD A COMPLETE LOSS OF HIS, HER OR
          ITS INVESTMENT IN THE SHARES.

     7.   The Investor understands that an investment in the Shares involves a
          substantial degree or risk, including, without limitation, matters
          discussed under the caption "Management's Discussion and Analysis of
          Financial Condition and Results of Operations" in the Report on Form
          10-Q for January 31, 1998.  No representation has been made regarding
          the future performance of the Buyer or the future market value of the
          Shares.

     8.   In order to induce the Buyer to enter into the Merger Agreement, the
          Investor hereby agrees that he, she or it will not, except with the
          prior written approval of the Buyer, directly or indirectly offer to
          sell, contract to sell or otherwise sell or dispose of any of the
          Shares, or engage in any other transaction which reduces the risks of
          ownership, for a period of twelve months from the date hereof
          provided, however, arrangements designed to limit normal market risk
          (such as a collar) are permitted so long as such arrangement does not
          adversely affect the exemption from registration under the Securities
          Act relied upon by the Buyer in connection with its issuing the Shares
          in the Merger.  The Investor agrees and consents to the entry of stop
          transfer instructions with

                                      -5-
<PAGE>
 
          the Buyer's transfer agent against the transfer of Shares held by the
          Investor except in compliance with the foregoing restrictions.

     9.   The Investor recognizes that the issuance of Shares will be based to a
          material extent upon his, her or its representations, warranties and
          agreements set forth in this Agreement, and the Investor agrees on
          demand to indemnify and hold harmless the Buyer and each officer,
          director, stockholder, employee and affiliate thereof from and against
          any and all loss, damage, liability or expense, including costs and
          reasonable attorneys' fees, to which they may be put or which they may
          incur by reason of, or in connection with, any misrepresentation the
          Investor has made in this Agreement, any breach by the Investor of any
          agreement contained in this Agreement, or arising out of the
          Investor's sale or distribution of any Shares in violation of the
          Securities Act, the State Acts or this Agreement.  All
          representations, warranties and covenants and the indemnification
          contained in this Agreement shall survive this Agreement and the
          Investor's admission as a stockholder of the Buyer.

     10.  This Agreement, together with the Registration Rights Agreement dated
          the date hereof, constitutes the entire agreement between the parties
          hereto with respect to the subject matter hereof, and this Agreement
          supersedes all prior agreements, understandings and arrangements, if
          any, whether oral or written, between the parties hereto with respect
          to the subject mater hereof.  The provisions of the Agreement shall be
          deemed severable and the invalidity or unenforceability of any
          provision shall not affect the validity or enforceability of the other
          provisions hereof.  No provisions of this Agreement shall be amended
          without the express written consent of the parties hereto.

                                      -6-
<PAGE>
 
          [SIGNATURE PAGE TO NON-EMPLOYEE INVESTMENT REPRESENTATION 
                             AND LOCKUP AGREEMENT]

     11.  This Agreement shall be governed by and construed and enforced in
          accordance with the laws of the State of Delaware without giving
          effect to the conflict of laws principles thereof.

                              Sincerely,


                              --------------------------------------------------
                              (Name of Investor)



                              --------------------------------------------------
                              (Signature of Investor or Authorized Signatory)


                              __________________________________________________
                              (Print Name of Authorized Signatory, if
                              applicable)

                              __________________________________________________
                              (Authorized Signatory's Capacity, if applicable)


Date:  April 8, 1998
<PAGE>
 
     The following persons have signed a Non-Employee Stockholder Investment 
Representation and Lock-up Letter:

Aurora Ventures, LLC
Aurora Ventures II, LLC
Cordova Capital Partners, L.P. - Enhanced Appreciation
Fadel, Edward
Gray Ventures, Inc.
Intersouth Partners III, L.P.
Mayer, Paul
Rainey, Don
Rasmussen, Paul
Roise, Claire
Southeast Interactive Technology Fund I, L.L.C.
Thorpe, Alexander IV
Tri-State Investment Group II, LLC



<PAGE>
 
                                                                    Exhibit 2.6
                                                                    -----------

 
                         REGISTRATION RIGHTS AGREEMENT

                                 April 8, 1998

To each of the several Stockholders named in
Schedule 1.12A or 1.12B to the Agreement and Plan of Merger
dated the date hereof

Dear Ladies and Gentlemen:

  This will confirm that in consideration of the provisions contained in the
Agreement and Plan of Merger dated the date hereof (the "Merger Agreement")
between CMG Information Services, Inc. (the "Buyer"), Accipiter, Inc. and CMGI
Acquisition Corporation ("Acquisition"), the Buyer covenants and agrees with
each of you as follows:

     1.   Certain Definitions. As used in this Agreement, the following terms
          -------------------      
shall have the following meanings:

     2.   "Commission" shall mean the Securities and Exchange Commission, or any
           ----------        
other federal agency at the time administering the Securities Act.

          "Common Stock" shall mean the Common Stock, $.01 par value, of the
           ------------  
Buyer, as constituted as of the date of this Agreement.

          "Exchange Act" shall mean the Securities Exchange Act of 1934, as
           ------------ 
amended, or any similar federal statute, and the rules and regulations of the
Commission thereunder, all as the same shall be in effect at the time.

          "Lock-ups" shall mean the stockholder representation and lock-up
           --------   
letters delivered to the Buyer by the parties hereto pursuant to the Merger
Agreement.

          "Merger Shares" shall mean the Common Stock issued pursuant to the
           -------------    
Merger Agreement.

          "Registration Expenses" shall mean the expenses so described in
           --------------------- 
Section 6.

          "Restricted Stock" shall mean the Merger Shares, excluding Merger
           ---------------- 
Shares which have been (a) registered under the Securities Act pursuant to an
effective registration statement filed thereunder and disposed of in accordance
with the registration statement covering them or (b) sold pursuant to Rule 144
under the Securities Act.

          "Securities Act" shall mean the Securities Act of 1933, as amended, or
           --------------  
any similar federal statute, and the rules and regulations of the Commission
thereunder, all as the same shall be in effect at the time.
<PAGE>
 
          "Selling Expenses" shall mean the expenses so described in Section 6.
           ----------------                                                    

     2.   Required Registration.
          --------------------- 

          (a)  The Buyer will use its reasonable best efforts to cause to be
declared effective a registration statement on From S-3 or any successor thereto
(or in the event the Buyer is not eligible to use Form S-3 or such successor
form, Form S-1 or any other form then available for such purpose) following (i)
the date which is six months after the date hereof and (ii) the date which is
twelve months after the date hereof. Forty-five days prior to each such date,
the Buyer shall send a Notice of Registration Statement and Selling
Securityholder Questionnaire to each individual or entity which holds Restricted
Stock which, as a result of such six month date or twelve month date referenced
above, will no longer be subject to the "lock-up" described in the Investment
Representation and Lock-up Letter executed on the date hereof. To be included on
such registration statement, a holder must return a completed Notice of
Registration Statement and Selling Securityholder Questionnaire within fifteen
days of the date of the Notice of Registration Statement and Selling
Securityholder Questionnaire. If after expiration of such fifteen day period,
the holders of Restricted Stock have not indicated a desire to have eligible
shares with an aggregate price to the public of at least $600,000 included in
the registration statement, the Buyer shall not be required to file a
registration statement at such time. If holders have indicated a desire to have
eligible shares with an aggregate price to the public of at least $600,000
included in the registration statement, the Buyer shall as promptly as
practicable file a registration statement covering such shares and shall use its
reasonable best efforts to have such registration statement declared effective.

          (b)  If the intended method of disposition is an underwritten public
offering, the holders of a majority of the shares of Restricted Stock to be sold
in such offering shall designate the managing underwriter of such offering,
subject to the approval of the Buyer, which approval shall not be unreasonably
withheld.

          (c)  The Buyer shall be entitled to include in any registration
statement referred to in this Section 2 shares of Common Stock to be sold by the
Buyer for its own account, except as and to the extent that such method of
disposition is an underwritten public offering and in the opinion of the
managing underwriter such inclusion would adversely affect the marketing of the
Restricted Stock to be sold.

          (d)  The Buyer's obligation to file a registration statement or cause
such registration statement to become effective shall be suspended for up to 30
days if there exists at the time material non-public information relating to the
Buyer which the Buyer determines in good faith would interfere with or affect
the negotiation or completion of a contemplated transaction (whether or not a
final decision has been made to undertake such transaction) or involve initial
or continuing disclosure obligations that are not in the best interest of the
Buyer.

          (e)  The Buyer shall be obligated to keep a registration statement
filed pursuant to Section 2(a) effective until the earliest of (i) the sale of
all of the shares included thereunder, (ii) the agreement by the holders of such
shares to terminate the registration, (iii) each holder of such shares becoming
eligible, under Rule 144 under the Securities Act, to make unregistered sales in
a three-month period of all its shares included on such registration statement
or (iv) the 

                                       2
<PAGE>
 
registration rights of the holders of such shares have terminated hereunder. At
such time, the Buyer may file a post-effective amendment to such registration
statement removing from registration the shares included in such registration
statement form.

     3.   Incidental Registration. If the Buyer at any time (other than pursuant
          ----------------------- 
to Section 2) proposes to register any of its Common Stock under the Securities
Act for sale to the public (except with respect to registration statements on
Forms S-4, S-8 or another form not available for registering the Restricted
Stock for sale to the public), it shall give written notice to all holders of
outstanding Restricted Stock of its intention so to do. Upon the written request
of any such holder, received by the Buyer within 30 days after the giving of any
such notice by the Buyer, to register any of its Restricted Stock which have
been released from their respective Lock-ups (which request shall state the
intended method of disposition thereof), the Buyer will use its reasonable
commercial efforts to cause the Restricted Stock as to which registration shall
have been so requested to be included in the securities to be covered by the
registration statement proposed to be filed by the Buyer. In the event that any
registration pursuant to this Section 3 shall be, in whole or in part, an
underwritten public offering of Common Stock, the number of shares of Restricted
Stock to be included in such an underwriting may be reduced (pro rata among the
requesting holders based upon the number of shares of Restricted Stock owned by
such holders) if and to the extent that the managing underwriter or underwriters
shall be of the opinion that such inclusion would adversely affect the marketing
of the securities to be sold by the Buyer. Notwithstanding the foregoing
provisions, the Buyer may elect not to file, withdraw or file a post-effective
amendment terminating any registration statement referred to in this Section 3
without thereby incurring any liability to the holders of Restricted Stock.

     4.   Registration Procedures. If the Buyer is required by the provisions of
          -----------------------                                               
Sections 2 or 3 to file a registration statement covering shares of Restricted
Stock, the Buyer agrees to:

          (a)  subject to the provisions of Sections 2 and 3, prepare and file
with the Commission such registration statement including such securities and
use reasonable commercial efforts to cause such registration statement to become
effective;

          (b)  subject to the provision of Section 4(a), prepare and file with
the Commission such amendments and supplements to such registration statement
and the prospectus included therein as may be necessary to keep such
registration statement effective for the period of distribution contemplated
hereby, and comply with the provisions of the Securities Act;

          (c)  use reasonable efforts to prevent the issuance of any stop order
or other order suspending the effectiveness of such registration statement and,
if such an order is issued, to obtain the withdrawal thereof at the earliest
possible time and to notify each holder of Restricted Stock included in such
registration statement of such order;

          (d)  furnish to each seller of Restricted Stock such number of copies
of the prospectus included in such registration statement (including each
preliminary prospectus) as such persons reasonably may request in order to
comply with the requirements of the Securities Act;

                                       3
<PAGE>
 
          (e)  notify the holders of Restricted Stock included in the
registration statement upon the occurrence of any event as a result of which the
prospectus included in such registration statement, as then in effect, contains
an untrue statement of material fact or omits to state a material fact required
to be stated therein or necessary to make the statements therein not misleading
in light of the circumstances then existing, and as promptly as practicable,
prepare, file and furnish to such holders a reasonable number of copies of a
supplement or an amendment to such prospectus as may be necessary so that such
prospectus does not contain an untrue statement of material fact or omit to
state a material fact required to be stated therein or necessary to make the
statements therein not misleading in light of the circumstances then existing;
provided, however, that the Buyer may delay preparing, filing and distributing
- --------  -------                    
any such supplement or amendment if the Buyer determines in good faith that such
supplement or amendment might, in the reasonable judgment of the Buyer, (i)
interfere with or affect the negotiation or completion of a transaction that is
being contemplated by the Buyer (whether or not a final decision has been made
to undertake such transaction) or (ii) involve initial or continuing disclosure
obligations that are not in the best interests of the Buyer's stockholders at
such time; provided, further, that (x) the Buyer shall give notice (a
           --------  -------                    
"Standstill Notice") of any such delay, (y) such delay shall not extend for a
period of more than thirty (30) days without the written consent of the holders
of a majority of the Registered Stock included in such registration statement
and (z) the Buyer shall not exercise such right more than twice during any
twelve-month period.

          (f)  if required, use reasonable efforts to register or qualify the
Restricted Stock covered by such registration statement under the securities or
"blue sky" laws of such United States jurisdictions as the sellers of Restricted
Stock or, in the case of an underwritten public offering, the managing
underwriter or underwriters reasonably shall request, provided, however, that
                                                      --------  ------- 
the Buyer shall not for any such purpose be required to qualify generally to
transact business as a foreign corporation in any jurisdiction where it is not
so qualified or to consent to general service of process in any such
jurisdiction;

          (g)  use reasonable efforts to include the Restricted Stock covered by
such registration statement on the Nasdaq National Market or any securities
exchange on which the Common Stock of the Buyer is then listed; and

          (h)  in the event of an underwritten public offering of the Restricted
Securities, enter into and perform its obligations under an underwriting
agreement, in usual and customary form reasonably acceptable to the Buyer, with
the managing underwriter of such offering.

     5.   Obligations of Holder.  In connection with the registration of the
          ---------------------                                             
Restricted Stock pursuant to a registration statement, each holder of shares of
Restricted Stock included thereon shall:

          (a)  furnish to the Buyer such information regarding itself and the
intended method of disposition as necessary to assure compliance with federal
and applicable state securities laws or as the Buyer shall reasonably request;

          (b)  upon receipt of any notice from the Buyer of the happening of any
event of the kind described in Section 4(c), immediately discontinue disposition
of Restricted Stock 

                                       4
<PAGE>
 
pursuant to the registration statement until withdrawal of the stop order
referred to in Section 4(c); and

          (c)  not sell or otherwise transfer any Restricted Stock during the
period from the date specified in the Standstill Notice given by the Buyer
pursuant to Section 4(e) above that the Buyer has determined that it will delay
the preparation and filing of an amendment or supplement to the prospectus
included in the registration statement until the expiration date specified in
such notice.

     6.   Expenses. All expenses incurred by the Buyer in complying with
          --------  
Sections 2, 3 or 4, including, without limitation, all registration and filing
fees, printing expenses, fees and disbursements of counsel and independent
public accountants for the Buyer, fees and expenses incurred in connection with
complying with state securities or "blue sky" laws, fees payable to the National
Association of Securities Dealers, Inc., fees payable to any securities exchange
or over-the-counter market quotation system (i.e. Nasdaq National Market
System), up to $5,000 (per registration statement) in fees of one counsel to the
sellers of Restricted Stock, which counsel shall be Hutchison & Mason PLLC
unless alternative counsel is selected by the holders of a majority of such
shares, and fees of transfer agents and registrars, but excluding any Selling
Expenses, are called "Registration Expenses." All underwriting discounts and
selling commissions, fees of counsel and other advisors to sellers of Restricted
Stock and transfer and similar taxes are called "Selling Expenses."

     The Buyer will pay all Registration Expenses. All Selling Expenses shall be
borne by the participating sellers.

     7.   Indemnification and Contribution. In the event that any Restricted
          -------------------------------- 
Stock is included in a registration statement under this Agreement:

          (a)  to the extent permitted by law, the Buyer shall indemnify and
hold harmless each selling stockholder against any losses, claims, damages,
liabilities or reasonable out-of-pocket expenses (whether joint or
several)(collectively, including legal or other expenses reasonably incurred in
connection with investigating or defending same, "Losses"), insofar as any such
Losses arise out of or are based upon any untrue statement or alleged untrue
statement of a material fact contained in such registration statement or (ii)
the omission or alleged omission to state therein a material fact required to be
stated therein, or necessary to make the statements therein, in light of the
circumstances under which they were made, not misleading. The Buyer will
reimburse such stockholders for any legal or other expenses as reasonably
incurred by any such entity or person in connection with investigating or
defending any Loss; provided, however, that the foregoing indemnity shall not
                    --------  -------
apply to amounts paid in settlement of any Loss if such settlement is effected
without the consent of the Buyer (which consent shall not be unreasonably
withheld), nor shall the Buyer be obligated to indemnify any person for any Loss
to the extent that such Loss arises out of or is based upon and in conformity
with information furnished by such person for use in such registration
statement; and provided, further, that the Buyer shall not be required to
indemnify any person to the extent that any Loss results from such person
selling Common Stock (i) to a person to whom there was not sent or given, at or
prior to the written confirmation of the sale of such shares, a copy of the
prospectus, as most recently amended or supplemented, if the Buyer has
previously furnished or made available copies

                                       5
<PAGE>
 
thereof or (ii) following written notice by the Buyer of an event described in
Section 4(c) or 4(e).

          (b)  to the extent permitted by law, each selling stockholder agrees
to indemnify and hold harmless the Buyer, the officers, directors, employees,
agents and representatives of the Buyer, and each person, if any, who controls
the Buyer within the meaning of the Securities Act or the Exchange Act, against
any Losses to the extent that any such Losses arise out of or are based upon and
in conformity with information furnished by such stockholder for use in such
registration statement; and such selling stockholder agrees to reimburse any
legal or other expenses as reasonably incurred by the Buyer and any such
officer, director, employee, agent, representative, or controlling person, in
connection with investigating or defending any such Loss; provided, however,
                                                          --------  ------- 
that the foregoing indemnity shall not apply to amounts paid in settlement of
any such Loss if such settlement is effected without the consent of such
stockholder, which consent shall not be unreasonably withheld; provided,
                                                               --------  
further, that, in no event shall any indemnity under this subsection 7(b) exceed
- --------  
the sales price of the Restricted Stock sold by such stockholder under the
registration statement; and

          (c)  promptly after receipt by an indemnified party under this Section
7 of notice of the commencement of any action (including any governmental
action), such indemnified party will, if a claim in respect thereof is to be
made against any indemnifying party under this Section 7, deliver to the
indemnifying party a written notice of the commencement thereof and the
indemnifying party shall have the right to participate in and to assume the
defense thereof with counsel mutually satisfactory to the parties; provided,
                                                                   --------
however, that an indemnified party shall have the right to retain its own
- -------
counsel, with the reasonably incurred fees and expenses of one such counsel to
be paid by the indemnifying party, if representation of such indemnified party
by the counsel retained by the indemnifying party would be inappropriate under
applicable standards of professional conduct due to actual or potential
conflicting interests between such indemnified party and any other party
represented by such counsel in such proceeding. The failure to deliver written
notice to the indemnifying party within a reasonable time of the commencement of
any such action, to the extent prejudicial to its ability to defend such action,
shall relieve such indemnifying party of any liability to the indemnified party
under this Section 7 with respect to such action, but the omission so to deliver
written notice to the indemnifying party will not relieve it of any liability
that it may have to any indemnified party otherwise than under this Section 7 of
with respect to any other action.

     8.   Miscellaneous.
          ------------- 

          (a)  All notices, requests, consents and other communications
hereunder shall be in writing and shall be delivered in person, mailed by
certified or registered mail, return receipt requested, or sent by telecopier or
telex, addressed as follows:

               (i)  if to the Buyer at its address or facsimile number set forth
in the Merger Agreement with a copy to Palmer & Dodge LLP, One Beacon Street,
Boston, Massachusetts 02108, Attention: William Williams II, Telephone: (617)
573-0100, Facsimile: (617) 227-4420;

                                       6
<PAGE>
 
               (ii)  if to a current holder of Restricted Stock, at the address
or facsimile number set forth under such holder's name on the signature page
hereto with a copy to Hutchison & Mason PLLC, Suite 400, 4011 Westchase
Boulevard, Raleigh, North Carolina 27607, Attention: Fred D. Hutchison,
Telephone: (919) 829-9600, Facsimile: (919) 829-9696; and

               (iii) if to any subsequent holder of Restricted Stock, at such
address as has been furnished to the Buyer in writing by such holder with a copy
to Hutchison & Mason PLLC, Suite 400, 4011 Westchase Boulevard, Raleigh, North
Carolina 27607, Attention: Fred D. Hutchison, Telephone: (919) 829-9600,
Facsimile: (919) 829-9696;

or, in any case, at such other address or addresses as shall have been furnished
in writing to the Buyer (in the case of a holder of Restricted Stock) or to the
holders of Restricted Stock (in the case of the Buyer) in accordance with the
provisions of this paragraph.

          (b)  This Agreement shall be governed by and construed in accordance
with the laws of the State of Delaware.

          (c)  This Agreement may not be amended or modified, and no provision
hereof may be waived, without the written consent of the Buyer and the holders
of at least a majority of the outstanding shares of Restricted Stock.

          (d)  This Agreement may be executed in two or more counterparts, each
of which shall be deemed an original, but all of which together shall constitute
one and the same instrument.

          (e)  The obligations of the Buyer to register shares of Restricted
Stock, or to keep a registration statement including Shares of Restricted Stock
effective, under Sections 2 or 3 shall terminate with respect to each holder
upon such time as all of the holder's Merger Shares are eligible for sale during
a single three month period under Rule 144.

          (f)  The rights hereunder of the holder may be assigned to a
transferee of the Restricted Stock as long as: (i) the Buyer is, within thirty
(30) days following such transfer, furnished with written notice of the name and
address of such transferee, (ii) immediately following such transfer, the
further disposition of Restricted Stock is restricted under the Securities Act,
(iii) the transferee agrees in writing with the Buyer to be bound by all of the
provisions hereof and (iv) such transfer is made in accordance with the
applicable requirements of the Lock-up. No rights under this Agreement shall be
assigned to any person or entity to whom less than all of the Restricted Stock
held by transferor are transferred; it is understood, however, that assignment
rights under this Agreement are permissible if made in connection with
distributions without consideration, such as by a partnership to its partners.

          (g)  If any provision of this Agreement shall be held to be illegal,
invalid or unenforceable, such illegality, invalidity or unenforceability shall
attach only to such provision and shall not in any manner affect or render
illegal, invalid or unenforceable any other provision of this Agreement, and
this Agreement shall be carried out as if any such illegal, invalid or
unenforceable provision were not contained herein.

                                       7
<PAGE>
 
     Please indicate your acceptance of the foregoing by signing and returning
the enclosed counterpart of this letter, whereupon this Agreement shall be a
binding agreement between the Buyer and you.

                               CMG INFORMATION SERVICES, INC.



                               By /s/ Andrew J. Hajducky
                                  -------------------------------
                                  Name: Andrew J. Hajducky III
                                  Title:  Chief Financial Officer

                                       8
<PAGE>
 
               [SIGNATURE PAGE TO REGISTRATION RIGHTS AGREEMENT]

          AGREED TO AND ACCEPTED as of the date first above written.


                                _______________________________________
                                (Name of Stockholder)



                                --------------------------------------- 
                                (Signature)


                                ---------------------------------------      
                                (Print Name)


                                _______________________________________
                                (Title, if applicable)


                                Stockholder's Address for Notice:


                                ---------------------------------------       
 

                                ---------------------------------------      

                                _______________________________________       

                                _______________________________________       
<PAGE>
 
                              Persons Who Signed
                         Registration Rights Agreement


Aurora Ventures, LLC
Aurora Ventures II, LLC
Kathleen Bagley
Graham Best
Keith W. Bolick
Robert Scott Bradley
George Browning
William C. Burden
Martin C. Buskirk III
Lauren I. Cambra
Chrisseas D. Clemons
Cordone Capital Partners LP - Enhanced Appreciation
Rodrigo DeGuzman
Ruby M. Dyer
Roger Edgar
Douglas E. Edwards
Chris Evans
Edward Fadel
Jane D. Foreman
Susan Free
Kip A. Frey
Gray Ventures, Inc.
Brian E. Handly
Alexander M. Herring
Intersouth Partners III, L.P.
Laraine H. Jepson
Jeffrey Jordan

<PAGE>
 
Richard Kimo Kong
Wendy Kong
Thomas Kressly
Laura M. Major
Paul Mayer
Sean McClellan
Phyllis F. Morris
Donald J. Rainey
Paul Rasmussen
Maribeth H. Roach
Claire V. Roise
Robert G. Sands Jr.
Wesley J. Satterwhite
Southeast Interactive Technology Fund, LLC
Leo Guy Taylor Jr.
Alex P. Thorpe IV
TriState Investment Group II, LLC
John M. Turner
Dana Wimple
Jeff Wood
Robert Allen Wyke



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