MEDIA METRIX INC
8-K, 1999-10-20
BUSINESS SERVICES, NEC
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                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549

                                    FORM 8-K

                                 CURRENT REPORT

                     Pursuant to Section 13 or 15(d) of the

                         Securities Exchange Act of 1934

        Date of Report (Date of earliest event reported) October 8, 1999

                               MEDIA METRIX, INC.
- --------------------------------------------------------------------------------
             (Exact name of registrant as specified in its charter)

    Delaware                        000-25943                    11-3374729
- ---------------                  ----------------            -------------------
(State or other                  (Commission File                  (IRS Employer
jurisdiction of                  Number)                     Identification No.)
incorporation)

250 Park Avenue South, 7th Floor, New York, New York                10003
- ----------------------------------------------------              ----------
(Address of principal executive offices)                          (Zip Code)

       Registrant's telephone number, including area code: (212) 515-8700
                                                           --------------

                                 Not Applicable
- --------------------------------------------------------------------------------
         (Former name or former address, if changed since last report.)
<PAGE>

Item 2. Acquisition or Disposition of Assets.

      On October 6, 1999, Media Metrix, Inc. (the "Company") entered into an
Agreement and Plan of Merger (the "Merger Agreement") with AdRelevance, Inc., a
Washington corporation ("AdRelevance"), Jupiter Acquisition Corp., a Washington
corporation and the Company's wholly owned subsidiary ("Merger Sub"), and the
securityholders of AdRelevance named therein, pursuant to which the Company
agreed to acquire AdRelevance. On October 8, 1999, the acquisition was
consummated, Merger Sub was merged with and into AdRelevance and AdRelevance
became a wholly owned subsidiary of the Company.

      Pursuant to the Merger Agreement, each issued and outstanding share of
AdRelevance's common stock and Series A Preferred Stock was converted into
 .269899 shares of the Company's common stock. At the closing, the Company issued
an aggregate of 697,678 shares of the Company's common stock and assumed options
and warrants to purchase an aggregate of 223,566 shares of the Company's common
stock. In addition, up to 102,360 shares of the Company's common stock may
become issuable to AdRelevance's securityholders if certain milestones are
achieved. The amount of such consideration was determined based upon
arm's-length negotiations between the Company and AdRelevance.

      The merger was structured as a tax-free transaction for federal income tax
purposes and will be accounted for as a purchase transaction. The foregoing
summary of the terms of the Merger Agreement is qualified in its entirety by
reference to the provisions of the merger agreement, a copy of which is filed as
an exhibit to this report and is hereby incorporated herein by reference.

      A copy of the press release announcing the Merger Agreement is filed as an
exhibit to this report and is hereby incorporated herein by reference.

Item 7. Financial Statements and Exhibits.

      (A) Financial Statements of Business Acquired.

      Incorporated by reference to the Company's Registration Statement on
      Form S-1 (File No. 333-88751).

      (B) Pro Forma Financial Information.

      Incorporated by reference to the Company's Registration Statement on
      Form S-1 (File No. 333-88751).

      (C) Exhibits
<PAGE>

      1.1.  Agreement and Plan of Merger, dated as of October 6, 1999, by and
            among the Company, AdRelevance, Merger Sub and the stockholders of
            AdRelevance named therein.

      4.1   Registration Rights Agreement dated as of October 8, 1999 by and
            among the Company, and the securityholders of the Company named
            therein.

      99.1. Press Release of the Company issued on October 6, 1999.
<PAGE>

                                   SIGNATURES

      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 hereunto duly authorized.

                                      MEDIA METRIX, INC.


Date: October 20, 1999                By: /s/ Thomas Lynch
                                          --------------------------------------
                                          Name: Thomas A. Lynch
                                          Title: Chief Financial Officer



                                                                     Exhibit 1.1

                                                                  EXECUTION COPY

                          AGREEMENT AND PLAN OF MERGER
                                  by and among

                               MEDIA METRIX, INC.

                            JUPITER ACQUISITION CORP.

                                ADRELEVANCE, INC.

                                       AND

                         EACH OF THE SHAREHOLDERS LISTED
                             ON SCHEDULE 1.0 HERETO

                                   dated as of

                                 October 6, 1999
<PAGE>

                                TABLE OF CONTENTS

                                                                            Page

ARTICLE I.
          DEFINITIONS..........................................................2
          Section 1.01.  "Acquisition..........................................2
          Section 1.02.  "Acquirer Common Stock"...............................2
          Section 1.03.  "Acquirer Disclosure Schedule"........................2
          Section 1.04.  "Acquirer-Sub Stock"..................................2
          Section 1.05.  "Affiliates"..........................................2
          Section 1.06.  "Agreement"...........................................2
          Section 1.07.  "Articles of Merger"..................................2
          Section 1.08.  "Average Acquirer Price"..............................2
          Section 1.09.  "Business Day"........................................2
          Section 1.10.  "Closing".............................................2
          Section 1.11.  "Closing Date"........................................2
          Section 1.12.  "Code"................................................2
          Section 1.13.  "Commission"..........................................3
          Section 1.14.  "Common Stock Exchange Ratio".........................3
          Section 1.15.  "Constituent Corporations"............................3
          Section 1.16.  "Contingent Shares"...................................3
          Section 1.17.  "Contracts"...........................................3
          Section 1.18.  "Dissenting Shares"...................................3
          Section 1.19.  "Effective Date"......................................3
          Section 1.20.  "Effective Time"......................................3
          Section 1.21.  "Employee Plan".......................................3
          Section 1.22.  "Environmental Laws"..................................3
          Section 1.23.  "Environmental Liabilities"...........................3
          Section 1.24.  "Environmental Material Adverse Effect"...............4
          Section 1.25.  "ERISA"...............................................4
          Section 1.26.  "ERISA Affiliate".....................................4
          Section 1.27.  "Escrow Agreement"....................................4
          Section 1.28.  "Escrowed Shares".....................................4
          Section 1.29.  "Exchange Act"........................................4
          Section 1.30.  "Exchange Ratios".....................................4
          Section 1.31.  "Financial Statements"................................4
          Section 1.32.  "Fully Diluted Shares"................................4
          Section 1.33.  "Generally accepted accounting principles" or "GAAP"..4
          Section 1.34.  "Governmental Entity".................................4
          Section 1.35.  "Hazardous Substance".................................5
          Section 1.36.  "Indemnified Party"...................................5
          Section 1.37.  "Indemnifying Party"..................................5


                                       -i-
<PAGE>

          Section 1.38.  "Indemnity Claim".....................................5
          Section 1.39.  "Intellectual Property"...............................5
          Section 1.40.  "Interim Financial Statements"........................5
          Section 1.41.  "IRS".................................................5
          Section 1.42.  "Knowledge"...........................................5
          Section 1.43.  "License".............................................5
          Section 1.44.  "Liens" ..............................................5
          Section 1.45.  "Management Shareholders".............................5
          Section 1.46.  "Material Adverse Change".............................5
          Section 1.47.  "Material Adverse Effect".............................5
          Section 1.48.  "Merger Consideration"................................5
          Section 1.49.  "Merger"..............................................6
          Section 1.50.  "Nasdaq National Market"..............................6
          Section 1.51.  "Old Certificates"....................................6
          Section 1.52.  "Person"..............................................6
          Section 1.53.  "Prospectus"..........................................6
          Section 1.54.  "Public Filings"......................................6
          Section 1.55.  "Purchaser Representative"............................6
          Section 1.56.  "Registration Rights Agreement".......................6
          Section 1.57.  "Registration Statement"..............................6
          Section 1.58.  "Regulatory Authority"................................6
          Section 1.59.  "Release".............................................6
          Section 1.60.  "Requisite Regulatory Approvals"......................6
          Section 1.61.  "Securities Act"......................................6
          Section 1.62.  "Series A Exchange Ratio".............................6
          Section 1.63.  "Shareholder Approval"................................7
          Section 1.64.  "Stockholder Representative"..........................7
          Section 1.65.  "Shareholders"........................................7
          Section 1.66.  "Software"............................................7
          Section 1.67.  "Surviving Corporation"...............................7
          Section 1.68.  "Target Capital Stock"................................7
          Section 1.69.  "Target Common Stock".................................7
          Section 1.70.  "Target Disclosure Schedule"..........................7
          Section 1.71.  "Target Option".......................................7
          Section 1.72.  "Target Preferred Stock"..............................7
          Section 1.73.  "Target Warrants".....................................7
          Section 1.74.  "Tax" and "Taxes".....................................7
          Section 1.75.  "Tax Return(s)".......................................7
          Section 1.76.  "Unaudited Financial Statements"......................7
          Section 1.77.  "Warranting Shareholders".............................8
          Section 1.78.  "Washington Law"......................................8
          Section 1.79.  "Year 2000 Compliant".................................8


                                      -ii-
<PAGE>

ARTICLE II.
          THE MERGER...........................................................8
          Section 2.01.  The Merger............................................8
          Section 2.02.  Closing and Effective Time............................8
          Section 2.03.  Effects of the Merger.................................8
          Section 2.04.  Articles of Incorporation and Bylaws..................9
          Section 2.05.  Director..............................................9
          Section 2.06.  Officers..............................................9
          Section 2.07.  Conversion of Outstanding Target Capital Stock........9
          Section 2.08.  Cancellation of Target Capital Stock.................11
          Section 2.09.  Exchange of Certificates.............................11
          Section 2.10.  Conversion of Warrants...............................13
          Section 2.11.  Contingent Payments..................................13

ARTICLE III.
          REPRESENTATIONS AND WARRANTIES OF TARGET AND WARRANTING
          SHAREHOLDERS........................................................13
          Section 3.01.  Organization, Etc....................................13
          Section 3.02.  Subsidiaries and Other Target Interests..............14
          Section 3.03.  Capitalization.......................................14
          Section 3.04.  Authorization........................................14
          Section 3.05.  No Violation.........................................15
          Section 3.06.  Approvals............................................15
          Section 3.07.  Financial Statements and Other Information...........16
          Section 3.08.  No Undisclosed Liabilities...........................17
          Section 3.09.  Corporate Action.....................................17
          Section 3.10.  Events Subsequent to August 31, 1999.................17
          Section 3.11.  Taxes................................................18
          Section 3.12.  Litigation...........................................19
          Section 3.13.  Compliance with Laws.................................20
          Section 3.14.  Title to and Condition of Property...................20
          Section 3.15.  Environmental Matters................................21
          Section 3.16.  Contracts............................................21
          Section 3.17.  Employee Plans.......................................22
          Section 3.18.  Labor Matters........................................24
          Section 3.19.  Year 2000 Compliance.................................24
          Section 3.20.  Insurance Policies...................................25
          Section 3.21.  Records..............................................25
          Section 3.22.  Brokerage Fees.......................................25
          Section 3.23.  Suppliers and Customers..............................26
          Section 3.24.  Intellectual Property................................27
          Section 3.25.  Licenses.............................................27


                                      -iii-
<PAGE>

          Section 3.26.  No Illegal or Improper Transactions..................28
          Section 3.27.  Restrictive Documents and Territorial Restrictions...28
          Section 3.28.  Bank Accounts........................................28
          Section 3.29.  No Misleading Statements.............................28
          Section 3.30.  Hart-Scott-Rodino....................................29

ARTICLE IV.
          REPRESENTATIONS AND WARRANTIES OF THE SHAREHOLDERS..................29
          Section 4.01.  Ownership............................................29
          Section 4.02.  Authorization........................................29
          Section 4.03.  No Violation.........................................30
          Section 4.04.  Approvals............................................30
          Section 4.05.  Brokerage Fees.......................................30
          Section 4.06.  Litigation...........................................30

ARTICLE V.
          REPRESENTATIONS AND WARRANTIES OF ACQUIRER AND ACQUIRER SUB ........31
          Section 5.01.  Organization, Etc....................................31
          Section 5.02.  Capitalization.......................................31
          Section 5.03.  Authorization........................................31
          Section 5.04.  No Violation.........................................32
          Section 5.05.  Approvals............................................32
          Section 5.06.  Commission Filings...................................32
          Section 5.07.  Absence of Undisclosed Liabilities...................33
          Section 5.08.  Broker's and Finder's Fees...........................33
          Section 5.09.  Valid Issuance.......................................33
          Section 5.10.  No Vote Required.....................................33
          Section 5.11.  Ownership of Acquirer Sub; No Prior Activities.......33
          Section 5.12.  Litigation...........................................34
          Section 5.13.  Financial Statement and Other Information............34
          Section 5.14.  Absence of Certain Changes or Events.................34
          Section 5.15.  Intellectual Property................................34

ARTICLE VI.
          COVENANTS OF TARGET AND THE WARRANTING SHAREHOLDERS.................35
          Section 6.01.  Conduct of Target....................................35
          Section 6.02.  Access to Records and Personnel......................37
          Section 6.03.  No Other Offers......................................37
          Section 6.04.  Maintenance of Business..............................37
          Section 6.05.  Compliance with Obligations..........................38


                                      -iv-
<PAGE>

          Section 6.06.  Shareholder Approval.................................38
          Section 6.07.  Noncompetition and Confidentiality...................38

ARTICLE VII.
          COVENANTS OF ACQUIRER...............................................40
          Section 7.01.  Commission Filings...................................40
          Section 7.02.  Filing of Registration Statement.....................40
          Section 7.03.  NASDAQ Listing.......................................40
          Section 7.04.  Maintenance of Business..............................40
          Section 7.05.  Compliance with Obligations..........................40
          Section 7.06.  Tax Matters..........................................40
          Section 7.07.  Employee Benefits of Target Employees................41
          Section 7.08.  Consents.............................................42
          Section 7.09.  Maintenance of Target Indemnification Obligations....42

ARTICLE VIII.
          COVENANTS OF TARGET AND ACQUIRER....................................42
          Section 8.01.  Advice of Changes....................................42
          Section 8.02.  Regulatory Approvals.................................43
          Section 8.03.  Actions Contrary to Stated Intent....................43
          Section 8.04.  Certain Filings......................................43
          Section 8.05.  Satisfaction of Conditions Precedent.................43
          Section 8.06.  Public Disclosure....................................44

ARTICLE IX.
          CONDITIONS OF CLOSING...............................................44
          Section 9.01.  Conditions to All Parties' Obligations...............44
          Section 9.02.  Conditions to the Obligations of Acquirer
          and Acquirer Sub to Effect the Acquisition..........................45
          Section 9.03.  Conditions to the Obligations of Target and
          the Shareholders to Effect the Merger...............................48

ARTICLE X.
          TERMINATION, AMENDMENTS AND WAIVERS.................................50
          Section 10.01.  Termination.........................................50
          Section 10.02.  Effect of Termination...............................51

ARTICLE XI.
          INDEMNIFICATION.....................................................51
          Section 11.01.  Indemnification by the Shareholders.................51
          Section 11.02.  Indemnification by Acquirer.........................52
          Section 11.03.  Limitations.........................................52
          Section 11.04.  Notice and Defense of Claims........................53


                                       -v-
<PAGE>

          Section 11.05.  Exclusive Remedy....................................54
          Section 11.06.  Survival of Representations and Warranties..........54
          Section 11.07.  Reimbursement.......................................54

ARTICLE XII.
          GENERAL PROVISIONS..................................................55
          Section 12.01.  Taking of Necessary Action..........................55
          Section 12.02.  Effect of Due Diligence.............................55
          Section 12.03.  Expenses............................................55
          Section 12.04.  Successors and Assigns..............................55
          Section 12.05.  Entire Agreement....................................55
          Section 12.06.  Notices.............................................56
          Section 12.07.  Applicable  Law.....................................56
          Section 12.08.  Consent to Jurisdiction; Receipt of Process.........56
          Section 12.09.  No Third Party Beneficiaries........................56
          Section 12.10.  Amendments and Waivers..............................57
          Section 12.11.  Severability........................................57
          Section 12.12.  Construction........................................57
          Section 12.13.  Counterparts........................................57
          Section 12.14.  Headings............................................57

EXHIBITS .....................................................................59

SCHEDULES.....................................................................59


                                      -vi-
<PAGE>

                          AGREEMENT AND PLAN OF MERGER

      AGREEMENT AND PLAN OF MERGER, dated as of October 6, 1999 (this
"Agreement"), by and among MEDIA METRIX, INC., a Delaware corporation
("Acquirer"), JUPITER ACQUISITION CORP., a Washington corporation and
wholly-owned subsidiary of Acquirer ("Acquirer Sub"), ADRELEVANCE, INC., a
Washington corporation ("Target"), and the individuals and entities listed on
Schedule 1.0 hereto, constituting certain of the holders of capital stock of
Target.

                                    RECITALS

      WHEREAS, the respective Boards of Directors of Target, Acquirer and
Acquirer Sub have approved the acquisition of Target by Acquirer upon the terms
and subject to the conditions set forth in this Agreement; and

      WHEREAS, to effect such acquisition, the respective Boards of Directors of
Target, Acquirer and Acquirer Sub have approved the merger of Acquirer Sub with
and into Target (the "Merger") upon the terms and subject to the conditions set
forth in this Agreement, whereby (i) each issued and outstanding share of common
stock, par value $.0001 per share, of Target (the "Target Common Stock") and
(ii) each issued and outstanding share of Series A Preferred Stock, par value
$.0001 per share, of Target (the "Target Preferred Stock", and together with the
Target Common Stock, the "Target Capital Stock") will be converted into the
right to receive unregistered shares of common stock, par value $.01 per share,
of Acquirer (the "Acquirer Common Stock"), upon the terms and conditions set
forth herein; and

      WHEREAS, based upon the representations, warranties and agreements herein
made by Acquirer and Acquirer Sub and subject to the terms and conditions
contained in this Agreement, the Board of Directors of Target has approved this
Agreement, unanimously recommended to the shareholders of Target that they
approve the Merger and desires that Acquirer Sub be merged with and into Target
and that, as a result of the Merger, Target shall become a wholly owned
subsidiary of Acquirer; and

      WHEREAS, the requisite shareholders of Target have approved the Merger and
approved and adopted this Agreement; and

      WHEREAS, the parties intend for the Merger to qualify as a plan of
reorganization in accordance with the provisions of Section 368(a) of the
Internal Revenue Code of 1986, as amended and for this Agreement to constitute a
plan of reorganization within the meaning of Section 368(a) of the Code and
Treasury regulations thereunder.

      NOW, THEREFORE, in consideration of the premises, the representations,
warranties and agreements herein contained and for other good and valuable
consideration, the receipt and


                                       1
<PAGE>

sufficiency of which are hereby acknowledged, and subject to the terms and
conditions set forth herein, the parties hereto agree as follows:

ARTICLE I.

                                   DEFINITIONS

      In this Agreement, the following words and phrases shall have the meanings
hereinafter set forth:

      Section 1.01. "Acquisition" shall mean the acquisition of the Target
Capital Stock pursuant to the terms of this Agreement.

      Section 1.02. "Acquirer Common Stock" shall have the meaning given such
term in the Recitals hereof.

      Section 1.03. "Acquirer Disclosure Schedule" shall have the meaning given
such term in the preamble to Article V hereof.

      Section 1.04. "Acquirer-Sub Stock" shall mean shares of common stock, $.01
par value, of Acquirer Sub.

      Section 1.05. "Affiliates" shall have the meaning as set forth in Rule 144
promulgated under the Securities Act.

      Section 1.06. "Agreement" shall mean this Agreement and Plan of Merger.

      Section 1.07. "Articles of Merger" shall have the meaning given such term
in Section 2.02(b) hereof.

      Section 1.08. "Average Acquirer Price" means $64.478.

      Section 1.09. "Business Day" shall mean any day, other than a Saturday,
Sunday or legal holiday under the Federal laws of the United States or the State
of New York.

      Section 1.10. "Closing" shall have the meaning given such term in Section
2.02 hereof.

      Section 1.11. "Closing Date" shall have the meaning given such term in
Section 2.02 hereof.

      Section 1.12. "Code" shall mean the Internal Revenue Code of 1986, as
amended.

      Section 1.13. Commission" shall mean the Securities and Exchange
Commission of the United States.


                                       2
<PAGE>

      Section 1.14. "Common Stock Exchange Ratio" shall have the meaning given
such term in Section 2.07 hereof.

      Section 1.15. "Constituent Corporations" shall have the meaning given such
term in Section 2.01 hereof.

      Section 1.16. "Contingent Shares" shall have the meaning given such term
in Section 2.11 hereof.

      Section 1.17. "Contracts" shall have the meaning given such term in
Section 3.16(a) hereof.

      Section 1.18. "Dissenting Shares" shall have the meaning given such term
in Section 2.07(b) hereof.

      Section 1.19. "Effective Date" shall have the meaning given such term in
Section 2.02(b) hereof.

      Section 1.20. "Effective Time" shall have the meaning given such term in
Section 2.02(b) hereof.

      Section 1.21. "Employee Plan" shall have the meaning given such term in
Section 3.17(a) hereof.

      Section 1.22. "Environmental Laws" shall mean, with respect to Target, any
federal, state, or local law, statute, rule, regulation, order or other
requirement of law relating to (i) the manufacture, transport, use, treatment,
storage, disposal, release or threatened release of Hazardous Substances, or
(ii) the protection of human health or the environment (including, without
limitation, natural resources, air, and surface or subsurface land or waters).

      Section 1.23. "Environmental Liabilities" shall mean any and all
liabilities, responsibilities, claims, suits, losses, costs (including
remediation, removal, response, abatement, clean-up, investigative and/or
monitoring costs and any other related costs and expenses, other causes of
action recognized now or at any later time, damages, settlements, expenses,
charges, assessments, liens, penalties, fines, pre-judgment and post-judgment
interest, attorney fees and other legal fees (a) pursuant to any agreement,
order, notice, requirement, responsibility or directive (including directives
embodied in Environmental Laws), injunction, judgment or similar documents
(including settlements) arising out of or in connection with any Environment
Laws, or (b) pursuant to any claim by a governmental entity or other person or
entity for personal injury, property damage, damage to natural resources,
remediation or similar costs or expenses incurred or asserted by such entity or
person pursuant to common law or statute.


                                       3
<PAGE>

      Section 1.24. "Environmental Material Adverse Effect" shall mean, with
respect to Target, any Environmental Liabilities that are reasonably expected to
exceed $10,000 per occurrence, or $25,000 in the aggregate.

      Section 1.25. "ERISA" shall mean the Employee Retirement Income Security
Act of 1974, as it now exists and is hereafter amended.

      Section 1.26. "ERISA Affiliate" shall mean any person, firm or entity
(whether or not incorporated) which, by reason of its relationship with Target
is required to be aggregated with Target under Sections 414(b), 414(c) or 414(m)
of the Code, or which, together with Target, is a member of a controlled group
within the meaning of Section 4001(a)(14) of ERISA.

      Section 1.27. "Escrow Agreement" shall mean that certain escrow agreement,
dated the Closing Date, by and among Acquirer, the Stockholder Representative
for and on behalf of each of the Shareholders and Continental Stock Transfer &
Trust Company, as escrow agent, in the form of Exhibit 2.07 hereto.

      Section 1.28. "Escrowed Shares" shall have the meaning given such term in
Section 2.07 hereof.

      Section 1.29. "Exchange Act" shall mean the Securities Exchange Act of
1934, as amended, and the rules and regulations thereunder.

      Section 1.30. "Exchange Ratios" shall have the meaning given such term in
Section 2.07 hereof.

      Section 1.31. "Financial Statements" shall have the meaning given such
term in Section 3.07(a) hereof.

      Section 1.32. "Fully Diluted Shares" means the aggregate of the number of
outstanding shares of Target Common Stock, the number of shares of Target Common
Stock issuable upon conversion of outstanding shares of Target Preferred Stock,
the number of shares of Target Common Stock issuable upon exercise of the
outstanding Target Warrants, the number of shares of Target Common Stock
issuable upon exercise of the outstanding Target Options and any other
outstanding rights to acquire Target Capital Stock.

      Section 1.33. "Generally accepted accounting principles" or "GAAP" shall
mean generally accepted accounting principles in the United States.

      Section 1.34. "Governmental Entity" shall mean any court, administrative
agency or commission or other federal, provincial, state, local, municipal or
foreign government or governmental authority or instrumentality.


                                       4
<PAGE>

      Section 1.35. "Hazardous Substance" shall mean any material or substance
that is: (i) listed, classified or regulated pursuant to or under any applicable
Environmental Law, or (ii) any petroleum product or by-product, asbestos, urea
formaldehyde insulation or polychlorinated biphenyls .

      Section 1.36. "Indemnified Party" shall have the meaning given such term
in Section 11.04 hereof.

      Section 1.37. "Indemnifying Party" shall have the meaning given such term
in Section 11.04 hereof.

      Section 1.38. "Indemnity Claim" shall have the meaning given such term in
Section 11.07 hereof.

      Section 1.39. "Intellectual Property" shall have the meaning given such
term in Section 3.23 hereof.

      Section 1.40. "Interim Financial Statements" shall have the meaning given
such term in Section 3.07(a) hereof.

      Section 1.41. "IRS" shall mean the Internal Revenue Service.

      Section 1.42. "Knowledge" shall mean, with respect to a Person, to the
actual knowledge of such Person after due investigation, including the knowledge
of such Person's directors and officers and employees of such Person with
responsibility for the particular matters referred to.

      Section 1.43. "License" shall have the meaning given such term in Section
3.25 hereof.

      Section 1.44. "Liens" shall mean all liens, charges, security interests,
pledges, rights or claims of others, restraints on transfer or other
encumbrances.

      Section 1.45. "Management Shareholders" shall mean the Shareholders listed
on Schedule 1.45.

      Section 1.46. "Material Adverse Change" shall mean a change or a
development involving a prospective change which could have a Material Adverse
Effect.

      Section 1.47. "Material Adverse Effect" shall mean, with respect to any
Person, a material adverse effect on the business, prospects, results of
operations, financial condition or assets of such Person and its Subsidiaries,
if any, taken as a whole.

      Section 1.48. "Merger Consideration" shall have the meaning given such
term in Section 2.07 hereof.


                                       5
<PAGE>

      Section 1.49. "Merger" shall have the meaning given such term in the
Recitals.

      Section 1.50. "Nasdaq National Market" shall mean the National Association
of Securities Dealers Automated Quotation National Market.

      Section 1.51. "Old Certificates" shall have the meaning given such term in
Section 2.09(a) hereof.

      Section 1.52. "Person" shall mean an individual, corporation, partnership,
limited liability company, joint venture, trust or unincorporated organization,
or a government or any agency or political subdivision thereof.

      Section 1.53. "Prospectus" shall have the meaning given such term in
Section 5.06 hereof.

      Section 1.54. "Public Filings" shall have the meaning given such term in
Section 5.06 hereof.

      Section 1.55. "Purchaser Representative" shall mean a person designated as
such by the Shareholders who are not "accredited investors" (as defined in
Regulation D promulgated under the Securities Act) in accordance with the
requirements of Regulation D promulgated under the Securities Act.

      Section 1.56. "Registration Rights Agreement" shall have the meaning given
such term in Section 9.01(d) hereof.

      Section 1.57. "Registration Statement" shall have the meaning given such
term in Section 5.06 hereof.

      Section 1.58. "Regulatory Authority" shall mean any foreign, federal,
provincial, state, local or municipal government or governmental authority the
approval of which, or filing with, is legally required for consummation of the
transactions contemplated by this Agreement.

      Section 1.59. "Release" shall mean any spilling, leaking, pumping,
pouring, emitting, emptying, discharging, injecting, escaping, leaching, dumping
or disposing into the environment.

      Section 1.60. "Requisite Regulatory Approvals" shall have the meaning
given such term in Section 9.01(b) hereof.

      Section 1.61. "Securities Act" shall mean the Securities Act of 1933, as
amended, and the rules and regulations thereunder.

      Section 1.62. "Series A Exchange Ratio" shall have the meaning given such
term in Section 2.07(b)(i) hereto.


                                       6
<PAGE>

      Section 1.63. "Shareholder Approval" shall mean the affirmative vote of
ninety percent (90%) of the outstanding shares of Target Capital Stock.

      Section 1.64. "Stockholder Representative" shall have the meaning given
such term in the Section 8.07 hereof.

      Section 1.65. "Shareholders" shall mean all of the holders of the Target
Capital Stock.

      Section 1.66. "Software" means all proprietary software applications
written, designed, developed, sold or licensed by Target, in connection with its
business and any translations or other derivative works based thereon or derived
therefrom, including, without limitation those identified in Schedule 1.66
hereto.

      Section 1.67. "Surviving Corporation" shall have the meaning given such
term in Section 2.01 hereof.

      Section 1.68. "Target Capital Stock" shall have the meaning given such
term in the Recitals hereof.

      Section 1.69. "Target Common Stock" shall have the meaning given such term
in the Recitals hereof.

      Section 1.70. "Target Disclosure Schedule" shall have the meaning given
such term in the preamble to Article 1.69 hereof.

      Section 1.71. "Target Option" shall have the meaning given such term in
Section 2.09(f) hereof.

      Section 1.72. "Target Preferred Stock" shall mean the Target Series A
Preferred Stock.

      Section 1.73. "Target Warrants" means the outstanding warrants issued by
Target which entitle the holders thereof to purchase shares of Target Capital
Stock.

      Section 1.74. "Tax" and "Taxes" shall have the meaning given such terms in
Section 3.11 hereof.

      Section 1.75. "Tax Return(s)" shall have the meaning given such term in
Section 3.11 hereof.

      Section 1.76. "Unaudited Financial Statements" shall have the meaning
given such term in Section 3.07(a) hereof.


                                       7
<PAGE>

      Section 1.77. "Warranting Shareholders" shall mean the Shareholders listed
on Schedule 1.77.

      Section 1.78. "Washington Law" shall have the meaning given such term in
Section 2.01 hereof.

      Section 1.79. "Year 2000 Compliant" shall have the meaning given such term
in Section 3.19 hereof.

ARTICLE II.

                                   THE MERGER

      Section 2.01. The Merger. At the Effective Time and subject to and upon
the terms of this Agreement, Acquirer Sub shall be merged with and into Target
in accordance with the provisions of the Business Corporation Act of the State
of Washington ("Washington Law"). Following the Merger, Target shall continue as
the surviving corporation under the name AdRelevance, Inc. (the "Surviving
Corporation"), and the separate corporate existence of Acquirer Sub shall cease.
Target and Acquirer Sub are sometimes collectively referred to as the
"Constituent Corporations."

      Section 2.02. Closing and Effective Time. (a) The closing (the "Closing")
of the Merger shall take place at 9:30 a.m., New York time, on a date to be
specified by the parties, which shall be no later than the second Business Day
after satisfaction or waiver of the latest to occur of the conditions set forth
in Article IX hereof (the "Closing Date"), at the offices of Fulbright &
Jaworski L.L.P., 666 Fifth Avenue, New York, New York 10103, unless another
time, place or date is agreed to in writing by the parties hereto.

      (b) As soon as practicable on or after the Closing Date, (i) Target,
Acquirer and Acquirer Sub shall file articles of merger, substantially in the
form of Exhibit 2.02(b) hereof (the "Articles of Merger"), with the Secretary of
State of the State of Washington and make all other filings or recordings
required by Washington Law in connection with the Merger. The Merger shall
become effective at such time as the Articles of Merger is duly filed with the
Secretary of State of the State of Washington in accordance with Washington Law
or at such other time as specified in the Articles of Merger. The date and time
when the Merger shall become effective are hereinafter referred to as the
"Effective Date" and "Effective Time," respectively.

      Section 2.03. Effects of the Merger. The separate corporate existence of
Target, as the Surviving Corporation, with all of its purposes, objects, rights,
privileges, powers, certificates and franchises, shall continue unimpaired by
the Merger. At the Effective Time, the Surviving Corporation shall succeed to
all the properties and assets of the Constituent Corporations and to all debts,
chooses in action and other interests due or belonging to the Constituent
Corporations and shall be subject to, and responsible for, all the debts,
liabilities and duties of the Constituent Corporations with the effects provided
by applicable provisions of law.


                                       8
<PAGE>

      Section 2.04. Articles of Incorporation and Bylaws.

            (a) The Articles of Incorporation of Target in effect immediately
prior to the Effective Time shall be the Articles of Incorporation of the
Surviving Corporation until amended in accordance with the provisions of the
applicable provisions of law except that at the Effective Time the Articles of
Incorporation shall be amended in the discretion of Acquirer.

            (b) The Bylaws of Target as in effect immediately prior to the
Effective Time shall be the Bylaws of the Surviving Corporation, until duly
amended in accordance with applicable provisions of law, the Articles of
Incorporation of the Surviving Corporation and such Bylaws.

      Section 2.05. Director. The director(s) of Acquirer Sub immediately prior
to the Effective Time shall be the initial director(s) of the Surviving
Corporation and shall hold office in accordance with the Articles of
Incorporation and Bylaws of the Surviving Corporation from the Effective Time
until his or their successor is duly elected or appointed and qualified.

      Section 2.06. Officers. The officers of Acquirer Sub immediately prior to
the Effective Time shall be the initial officers of the Surviving Corporation
and shall hold office in accordance with the Articles of Incorporation and
Bylaws of the Surviving Corporation from the Effective Time until their
respective successors are duly elected or appointed and qualified.

      Section 2.07. Conversion of Outstanding Target Capital Stock.

            (a) The shares of Acquirer Common Stock to be received by the
Shareholders in exchange for Target Capital Stock pursuant to this Section 2.07
are referred to in the aggregate as the "Merger Consideration."

            (b) Except (i) as provided in Section 2.08 hereof and (ii) for
shares, if any, held by persons who have not voted such shares for approval of
the Merger and with respect to which such persons shall become entitled to
exercise dissenters' rights in accordance with Chapter 23B.13 of Washington Law
(the "Dissenting Shares"), but subject to the indemnification obligations of the
Shareholders described in Article XI, as of the Effective Time, by virtue of the
Merger and without any action on the part of the holders of any shares of Target
Capital Stock or Acquirer Sub Stock:

                  (i) each share of Target Common Stock outstanding immediately
            prior to the Effective Time (other than shares held by Acquirer Sub)
            shall be converted at the Effective Time into the right to receive
            0.269899 shares of Acquirer Common Stock (the "Common Stock Exchange
            Ratio");

                  (ii) each share of Target Preferred Stock outstanding
            immediately prior to the Effective Time (other than shares held by
            Acquirer Sub) shall be converted at


                                       9
<PAGE>

            the Effective Time into the right to receive 0.269899 shares of
            Acquirer Common Stock (the "Series A Exchange Ratio"); and

                  (iii) each share of Acquirer Sub Stock outstanding immediately
            prior to the Effective Time other than shares held by Acquirer Sub
            shall be converted into one share of common stock of the Surviving
            Corporation.

      The Common Stock Exchange Ratio and the Series A Exchange Ratio are
referred to collectively herein as the "Exchange Ratios."

            (c) Except as provided in Section 2.09 and Section 2.07(e) hereof,
as of and after the Effective Time, no holder of any certificate that
immediately before the Effective Time represented shares of Target Common Stock
or Target Preferred Stock shall have any rights as a holder of Target Capital
Stock, other than to receive the consideration specified in this Section 2.07 in
accordance with the terms hereof.

            (d) Of the aggregate Merger Consideration payable to all holders of
Target Capital Stock pursuant to this Section 2.07, 102,360 shares of Acquirer
Common Stock (the "Escrowed Shares") shall be deposited by Acquirer at the
Closing with the Escrow Agent pursuant to the terms of the Escrow Agreement, a
form of which is attached hereto as Exhibit 2.07. The Escrowed Shares shall be
allocated among the Shareholders as indicated on Schedule 2.07(d) hereto. The
Escrowed Shares will serve as collateral security for the indemnification
obligations of the Shareholders as provided in Article XI hereof.

            (e) Any Dissenting Shares shall not be converted into Acquirer
Common Stock but shall instead be converted into the right to receive such
consideration as may be determined to be due with respect to such Dissenting
Shares pursuant to Washington Law. Target agrees that, except with the prior
written consent of Acquirer, or as required under Washington Law, it will not
voluntarily make any payment with respect to, or settle or offer to settle, any
such purchase demand. Each holder of Dissenting Shares who, pursuant to the
provisions of Washington Law, becomes entitled to payment of the fair value for
shares of Target Capital Stock shall receive payment therefor (but only after
such value shall have been agreed upon or finally determined pursuant to such
provisions). If, after the Effective Time, any Dissenting Shares shall lose
their status as Dissenting Shares, Acquirer shall issue and deliver, upon
surrender by such holder of certificate or certificates representing shares of
Target Capital Stock, the number of shares of Acquirer Common Stock to which
such holder would otherwise be entitled under this Section 2.07 and the Articles
of Merger less the number of shares allocable to such holder that are Escrow
Shares.

      Section 2.08. Cancellation of Target Capital Stock. At the Effective Time,
all shares of Target Capital Stock, if any, that are owned directly or
indirectly by Target as treasury stock shall be canceled without any
consideration being payable therefor.


                                       10
<PAGE>

      At the Effective Time, all shares of Target Capital Stock that are owned
by Acquirer Sub shall be cancelled without any consideration being payable
therefor.

      Section 2.09. Exchange of Certificates.

            (a) Exchange Procedures. As soon as reasonably practicable after the
Effective Time, each holder of record of a certificate or certificates that
immediately prior thereto represented issued and outstanding shares of Target
Capital Stock ("Old Certificates") shall surrender such Old Certificates,
together with a properly completed letter of transmittal (specifying that
delivery shall be effected, and that risk of loss and title to the Old
Certificates shall pass, only upon delivery of the Old Certificates to the
Surviving Corporation) in exchange for the consideration specified in Section
2.07, except as otherwise specifically provided in this Section 2.09. Until so
surrendered, the Old Certificates shall represent, after the Effective Time,
solely the right to receive the consideration specified in Section 2.07, except
as otherwise provided in this Section 2.09. Old Certificates surrendered to the
Surviving Corporation shall be canceled.

            (b) No Fractional Shares. No fractional shares of Acquirer Common
Stock and no certificates or scrip therefor, or other evidence of ownership
thereof, will be issued upon the surrender for exchange of the Old Certificates.
In lieu of any such fractional share, each holder of shares of Target Capital
Stock who would otherwise have been entitled to a fraction of a share of
Acquirer Common Stock upon consummation of the Merger shall be paid upon
surrender of the Old Certificates cash (rounded to the nearest whole cent),
without interest, in an amount equal to the product of (i) such fraction
multiplied by (ii) the Average Acquirer Price.

            (c) Dissenting Shares. The provisions of this Section 2.09 shall
also apply to Dissenting Shares that lose their status as such, except that the
obligations of Acquirer under this Section 2.09 shall commence on the date of
loss of such status and the holder of such shares shall be entitled to receive
in exchange for such shares the number of shares of Acquirer Common Stock to
which such holder is entitled pursuant to Section 2.07 hereof.

            (d) Distributions with Respect to Unexchanged Shares.
Notwithstanding any other provision of this Agreement, no dividends or other
distributions declared or made after the Effective Date on Acquirer Common Stock
shall be paid to any Person holding an Old Certificate evidencing Target Capital
Stock until such Old Certificate is surrendered for exchange as provided herein.
Subject to the effect of applicable laws, following surrender of any such Old
Certificate by any holder thereof, there shall be paid to the holder of such
surrendered Old Certificate, without interest (i) at the time of such surrender,
the amount of dividends or other distributions with a record date after the
Effective Date theretofore payable with respect to the Acquirer Common Stock
represented thereby and not paid, less the amount of any withholding taxes which
may be required thereon, and (ii) at the appropriate payment date, the amount of
dividends or other distributions with a record date after the Effective Date but
prior to the time of such surrender and a payment date subsequent to the time of
such surrender payable with respect to the Acquirer Common Stock represented
thereby, less the amount of any withholding taxes which may be required thereon.


                                       11
<PAGE>

            (e) Closing of Target Transfer Books. At the Effective Time, the
stock transfer books of Target shall be closed and no transfer of shares of
Target Common Stock or Target Preferred Stock, as the case may be, shall
thereafter be made. If, after the Effective Time, Old Certificates are presented
to the respective Surviving Corporation or the Exchange Agent, they shall be
canceled and exchanged for the consideration as provided in Section 2.07 hereof.

            (f) Assumption of Options. At the Effective Time, each option
granted by Target to purchase shares of Target Common Stock (each, a "Target
Option") which is outstanding and unexercised immediately prior thereto shall
cease to represent a right to acquire shares of Target Common Stock and shall be
assumed by Acquirer and converted automatically into an option to purchase the
number of shares of Acquirer Common Stock equal to the number of whole shares of
Target Common Stock subject to such option (including, without limitation, any
shares with respect to which the vesting is accelerated as a result of the
Merger) multiplied by the Common Stock Exchange Ratio (rounded to the nearest
whole share), at a price per share of Acquirer Common Stock equal to (i) the
exercise price for the shares of Target Common Stock purchasable pursuant to
such Target Option immediately prior to the Effective Time divided by (ii) the
Common Stock Exchange Ratio (rounded to the nearest whole cent), and shall
otherwise be subject to the terms of the Target 1999 Stock Option Plan (the
"Target Option Plan") pursuant to which such options were issued and the
agreements evidencing grants thereunder and shall thereupon be assumed by
Acquirer. The adjustments provided herein with respect to any options which are
"incentive stock options" (as defined in Section 422 of the Code) shall be and
are intended to be effected in a manner which is consistent with Section 424(a)
of the Code. Subject to the adjustments noted herein, the duration and other
terms of each option shall be the same as the original option except that all
references to (i) Target Common Stock shall be deemed to be references to
Acquirer Common Stock and (ii) the "Company" shall be deemed to be references to
Acquirer. Further, any and all vesting or performance requirements or conditions
affecting any outstanding stock option shall continue to apply. Target and
Acquirer shall take all action that may be necessary (under the terms of the
Target Option Plan or otherwise) to effectuate the provisions of this Section
2.09. Following the Closing Date, Acquirer shall send to each holder of an
assumed Target Option a written notice setting forth (i) the number of shares of
Acquirer Common Stock subject to each assumed Target Option, and (ii) the
exercise price per share of Acquirer Common Stock issuable upon exercise of an
assumed Target Option.

      Section 2.10. Conversion of Warrants. In the case of the Target Warrants
which are outstanding at the Effective Time, Acquirer shall, effective as of the
Effective Time, assume the Target Warrants (and if required by the terms of the
Target Warrants or if otherwise appropriate under the terms of Target Warrants,
execute a supplemental agreement in connection therewith) and shall reserve,
make available for issuance, and upon exercise of such Target Warrants in
accordance with their terms after the Effective Time, issue the number of shares
of Acquirer Common Stock equal to the number of shares of Target Capital Stock
that could have been purchased under the Target Warrants multiplied by the
applicable Exchange Ratio (rounded to the nearest whole figure), at a price per
share of Acquirer Common Stock equal to the Target Warrant purchase price
divided


                                       12
<PAGE>

by the appropriate exchange ratio (rounded to the nearest whole cent). Subject
to the adjustments noted herein, the duration and other terms of the Target
Warrants shall be the same as the original warrant except that all references to
(i) Target Capital Stock shall be deemed to be references to Acquirer Common
Stock and (ii) the "Company" shall be deemed to be references to Acquirer.
Further, any and all vesting or performance requirements or conditions affecting
any outstanding warrant shall continue to apply.

      Section 2.11. Contingent Payments. In addition to the Merger Consideration
and subject to the provisions contained in Schedule 2.11 hereto, Acquirer may
pay to the Shareholders and allocate to the holders of Target Options and Target
Warrants listed on Schedule 3.03, in each case as additional consideration for
the Merger, 102,360 shares of Acquirer Common Stock (the "Contingent Shares")
(rounded to the nearest whole figure), to the extent and in the manner indicated
on Schedule 2.11 hereto.

ARTICLE III.

             REPRESENTATIONS AND WARRANTIES OF TARGET AND WARRANTING
                                  SHAREHOLDERS

      Except as set forth (by reference to the applicable Section of this
Agreement) in the disclosure schedule delivered by Target and each of the
Warranting Shareholders to Acquirer on the date hereof (the "Target Disclosure
Schedule"), a copy of which is attached hereto as Schedule 3.0, Target and each
Warranting Shareholder hereby represent and warrant to Acquirer and Acquirer Sub
as of the date hereof and as of the Closing Date as follows:

      Section 3.01. Organization, Etc. Target is a corporation duly organized
and validly existing under the laws of the State of Washington and has full
corporate power and authority to conduct its business as it is now being
conducted and to own, operate or lease the properties and assets it currently
owns, operates or holds under lease. Target is duly qualified or licensed to do
business and is in good standing as a foreign corporation in each jurisdiction
where the character of its business or the nature of its properties makes such
qualification or licensing necessary (all of which jurisdictions are set forth
on the Target Disclosure Schedule), except where the failure to so qualify or be
licensed would not have a Material Adverse Effect on Target. Target has
heretofore delivered to Acquirer true and correct copies of its Articles of
Incorporation and Bylaws as in effect on the date hereof.

      Section 3.02. Subsidiaries and Other Target Interests. Target does not
have any subsidiaries. Target does not have, directly or indirectly, any legal
or beneficial interest in any partnership, joint venture or other entity.

      Section 3.03. Capitalization. The authorized, issued and outstanding
capital stock of Target is as set forth on the Target Disclosure Schedule. All
of the issued and outstanding shares of capital stock of Target are owned, of
record and beneficially, by the Shareholders in the amounts set forth


                                       13
<PAGE>

on the Target Disclosure Schedule. All of the outstanding Target Options and
Target Warrants are held in the amounts and by the Persons identified on the
Target Disclosure Schedule. No Persons other than the Shareholders and holders
of Target Options and Target Warrants are or will be entitled to receive any
payment with respect to the Target Capital Stock. Target does not hold any
shares of its own capital stock. The designations, powers, preferences, rights,
qualifications, limitations and restrictions in respect of each class and series
of authorized capital stock of Target are as set forth in its Articles of
Incorporation, and all such designations, powers, preferences, rights,
qualifications, limitations and restrictions are valid, binding and enforceable
and in accordance with all applicable corporate laws. All outstanding shares of
Target Capital Stock have been duly authorized and validly issued and are fully
paid and non-assessable. All of the outstanding securities of Target were issued
in compliance with all applicable securities (federal and state) and corporate
laws. None of the outstanding securities have been issued in violation of any
preemptive rights, rights of first refusal or similar rights. There are no
outstanding options, warrants, convertible securities, calls, rights,
commitments, preemptive rights or agreements or instruments or understandings of
any character to which Target is a party or by which Target is bound, obligating
Target to issue, deliver or sell, or cause to be issued, delivered or sold,
contingently or otherwise, additional shares of its capital stock or any
securities or obligations convertible into or exchangeable for such shares or to
grant, extend or enter into any such option, warrant, convertible security,
call, right, commitment, preemptive right or agreement. There are no outstanding
obligations, contingent or other, of Target to purchase, redeem or otherwise
acquire any shares of its capital stock. There are no voting trust agreements or
other contracts, agreements, arrangements, commitments, plans or understandings
restricting or otherwise relating to voting, dividend or other rights with
respect to any of the Target Capital Stock (i) between or among Target and any
of its shareholders or (ii) to Target's Knowledge between or among any of
Target's shareholders.

      Section 3.04. Authorization. Target has all requisite corporate power and
authority to enter into this Agreement and each of the other agreements
contemplated hereby, to carry out its obligations under this Agreement and each
of the other agreements contemplated hereby and to consummate the transactions
contemplated hereby and thereby. The execution and delivery of this Agreement
and each of the other agreements contemplated hereby, the consummation of the
transactions contemplated hereby and thereby and the performance by Target of
its obligations hereunder and thereunder have been duly authorized by all
necessary corporate action on the part of Target other than obtaining
shareholder approval. A sufficient number of Shareholders have executed and
delivered written consents in the form of Exhibit 3.04 hereto such that this
Agreement, the Merger and the transactions contemplated hereunder have been
approved by the requisite shareholder vote of the Company in accordance with the
Target's Articles of Incorporation, Bylaws and applicable law. Each of this
Agreement and the other agreements contemplated hereby have been duly executed
and delivered by Target and, assuming due authorization, execution and delivery
by Acquirer and Acquirer Sub, constitute the legal, valid and binding obligation
of Target, enforceable against Target in accordance with their respective terms
(except as the enforceability thereof may be limited by any applicable
bankruptcy, insolvency or other laws affecting creditors' rights generally or by
general principles of equity, regardless of whether enforceability is considered
in equity or at law).


                                       14
<PAGE>

      Section 3.05. No Violation. The execution and delivery of this Agreement
and each of the other agreements contemplated hereby by Target do not, and the
consummation by Target of the transactions contemplated hereby and thereby, and
compliance with the terms hereof and thereof will not, (a) conflict with, or
result in any violation of or default under, any provision of its Articles of
Incorporation or Bylaws ; (b) conflict with, or result in any violation of or
default or loss of any benefit under, any License, statute, law, rule or
regulation, or any judgment, decree or order of any court or other governmental
agency or instrumentality to which Target is a party or to which any its
property is subject; (c) conflict with, or result in a breach or violation of or
default or loss of any benefit under, or accelerate the performance required by,
any Contract or material agreement (written or unwritten), understanding,
arrangement, indenture or other instrument to which Target is a party or to
which any of its property is subject, or constitute a default or loss of any
right thereunder or an event which, with the lapse of time or notice or both,
could reasonably be expected to result in a default or loss of any right
thereunder or the creation of any Lien upon any of the assets or properties of
Target; (d) result in any suspension, revocation, impairment, forfeiture or
nonrenewal of any License or (e) result in Target being required to pay any
amount or refund to any Affiliate or licensee of Target in respect of amounts
received by Target in advance of the performance of services. Target is in
compliance with all applicable laws, rules or regulations relating to or
affecting the operation, conduct or ownership of its property or business, other
than violations that individually or in the aggregate does not and will not have
a Material Adverse Effect on such entity.

      Section 3.06. Approvals. The execution and delivery of this Agreement and
each of the other agreements contemplated hereby and the consummation of the
transactions contemplated hereby and thereby by Target will not require the
consent, approval, order or authorization of any Governmental Entity or
Regulatory Authority or any other Person under any statute, law, rule,
regulation, permit, license, agreement, indenture or other instrument to which
Target is a party or to which its properties are subject, and no declaration,
filing or registration with any Governmental Entity or Regulatory Authority is
required by Target in connection with the execution and delivery of this
Agreement and each of the other agreements contemplated hereby, the consummation
of the transactions contemplated hereby and thereby, or the performance by
Target of its obligations hereunder and thereunder, except for (i) the filing of
the Articles of Merger, together with the required officers' certificates, and
(ii) such consents, approvals, orders, authorizations, registrations,
declarations and filing as may be required under the Exchange Act, the
Securities Act and applicable state securities laws.

      Section 3.07. Financial Statements and Other Information.

            (a) Target has delivered to Acquirer (i) true, correct and complete
copies of the unaudited balance sheet of Target as of December 31, 1998, and the
related statements of operations, accumulated deficit and cash flows for the
period from inception until ended December 31, 1998 (the "Unaudited Financial
Statements"), and (ii) true, correct and complete copies of the unaudited
balance sheet of Target as of August 31, 1999 and the related statements of
operations, accumulated deficit and cash flows for Target for the eight-month
period ended August 31, 1999 (the "Interim


                                       15
<PAGE>

Financial Statements"). The Unaudited Financial Statements and Interim Financial
Statements are herein collectively referred to as the "Financial Statements."

            (b) The Financial Statements are in accordance with the books and
records of Target, have been prepared in accordance with generally accepted
accounting principles consistently applied throughout the periods covered
thereby and the balance sheets included therein present fairly as of their
respective dates the financial condition of Target. All material liabilities and
obligations, whether absolute, accrued, contingent or otherwise, whether direct
or indirect, and whether due or to become due, which existed at the date of such
Financial Statements have been disclosed in the balance sheets included in the
Financial Statements or in notes to the Financial Statements to the extent such
liabilities were required, under generally accepted accounting principles, to be
so disclosed. The statements of operations, accumulated deficit and cash flows
included in the Financial Statements present fairly the results of operations,
accumulated deficit and cash flows of Target for the periods indicated. The
statements of operations included in the Financial Statements do not contain any
material items of special or non-recurring income or other income not earned in
the ordinary course of business except as expressly specified therein.

            (c) All properties, investments, tangible assets and deferred costs
reflected in the latest balance sheets included in the Financial Statements have
a fair market or realizable value at least equal to the value thereof as
reflected therein.

            (d) The accounts and notes receivable of Target included in the
latest balance sheet of Target included in their respective Financial
Statements, are, net of reserves reflected on the balance sheet, collectible in
full over the period of usual trade terms (by use of Target's normal collection
methods without resort to litigation or reference to a collection agency), and
there do not exist any defenses, counterclaims and set-offs which could
materially adversely affect such receivables, and all such receivables are
actual and bona fide receivables representing obligations for the total dollar
amount thereof shown on the books of Target. Target has fully performed all
obligations with respect thereto which it was obligated to perform to the date
hereof.

            (e) Since inception, there has been no Material Adverse Change in
Target, whether as a result of any legislative or regulatory change, revocation
of any License or right to do business, fire, explosion, accident, casualty,
labor trouble, riot, condemnation, act of God, or otherwise.

      Section 3.08. No Undisclosed Liabilities. Except as set forth in the notes
to the Financial Statements, the liabilities on the latest balance sheet of
Target included in the Financial Statements consist solely of accrued
obligations and liabilities incurred by Target in the ordinary course of
business to Persons which are not Affiliates of Target. There are no liabilities
of Target of any kind whatsoever, whether or not accrued and whether or not
contingent or absolute, determined, determinable or otherwise, including without
limitation documentary or standby letters of credit, bid or performance bonds,
or customer or third party guarantees, other than (a) liabilities disclosed in
the Financial Statements, (b) liabilities incurred in the ordinary course of
business and not required


                                       16
<PAGE>

to be set forth in the Financial Statements under generally accepted accounting
principles, (c) liabilities which have arisen after August 31, 1999 in the
ordinary course of business and consistent with past practice (none of which is
a liability for breach of contract, breach of warranty, tort, infringement claim
or lawsuit or a liability to repay or refund to any person any amounts
previously received by Target) and (d) legal fees and accounting fees incurred
in connection with the execution of this Agreement which, with respect to
clauses (a)-(d), individually, or in the aggregate, do not and could not
reasonably be expected to have a Material Adverse Effect. There are no asserted
claims for indemnification by any Person against Target under any law or
agreement or pursuant to Target's Articles of Incorporation or Bylaws, and
Target is unaware of any facts or circumstances that might give rise to the
assertion of such a claim against Target thereunder.

      Section 3.09. Corporate Action. All corporate action of the Board of
Directors and shareholders of Target taken on or prior to the date hereof has
been duly authorized, adopted or ratified in accordance with applicable law and
Target's Articles of Incorporation and Bylaws and has been duly recorded in
Target's corporate minute books (true, correct and complete copies of which have
been delivered to or made available for inspection by Acquirer).

      Section 3.10. Events Subsequent to August 31, 1999. Since August 31, 1999,
except for the grant of options to purchase shares of Target Common Stock
pursuant to the Target Option Plan described on the Target Disclosure Schedule
hereto, Target has not (a) issued any stock, bond or other corporate security
(including without limitation securities convertible into or rights to acquire
capital stock of Target); (b) borrowed any amount or incurred or become subject
to any liability (absolute, accrued or contingent), except current liabilities
incurred and liabilities under contracts entered into, all in the ordinary
course of business; (c) discharged or satisfied any Lien or incurred or paid any
obligation or liability (absolute, accrued or contingent) other than current
liabilities shown on its respective balance sheet included in the Unaudited
Financial Statements for the period ended August 31, 1999 and current
liabilities incurred since August 31, 1999 in the ordinary course of business;
(d) declared or made any payment or distribution to shareholders or purchased or
redeemed any shares of its capital stock or other securities, or entered into,
any agreement or commitment or currently has intention to do so; (e) mortgaged,
pledged or subjected to Lien any of its assets, tangible or intangible, other
than liens for current taxes not yet due and payable; (f) sold, assigned or
transferred any of its tangible assets except in the ordinary course of
business, or canceled any debt or claim; (g) sold, assigned, transferred or
granted any license with respect to any patent, trademark, trade name, service
mark, copyright, trade secret or other intangible asset; (h) suffered any loss
of property or waived any right of substantial value whether or not in the
ordinary course of business; (i) suffered any adverse change in its relations
with, or any loss or threatened loss of, any of its suppliers or customers
disclosed pursuant to Section 3.23; (j)(i) granted any severance or termination
pay to any of its directors, officers, employees or consultants, (ii) entered
into any employment, deferred compensation or other similar agreement (or any
amendment to any such existing agreement) or arrangement with any of its
directors, officers, employees or consultants, (iii) increased any benefits
payable under any existing severance or termination pay policies or employment
agreements, (iv) increased the compensation, bonus or other benefits payable to
any of its directors, officers, consultants or employees, except in each case in
the ordinary course of


                                       17
<PAGE>

business consistent with past practices; (k) made any material change in the
manner of its business or operations; (l) made any material change in any method
of accounting or accounting practice, except as specifically disclosed in the
Financial Statements; (m) entered into any transaction except in the ordinary
course of business or as otherwise contemplated hereby; or (n) entered into any
commitment (contingent or otherwise) to do any of the foregoing.

      Section 3.11. Taxes. For the purposes of this Agreement, a "Tax" or,
collectively, "Taxes," means any and all federal, state, local and foreign
taxes, assessments and other governmental charges, duties, fees, levies,
impositions and liabilities, including without limitation, income, gross
receipts, profits, sales, use and occupation, and value added, ad valorem,
transfer, gains, franchise, withholding, payroll, recapture, employment, excise,
unemployment insurance, social security, business license, occupation, business
organization, stamp, environmental, personal property, real property, worker's
compensation, license, lease, service, service use, severance, windfall profits,
customs and other taxes, together with all interest, fines, penalties and
additions imposed with respect to such amounts and any obligations under any
agreements or arrangements with any other person with respect to such amounts
and including any liability for taxes of a predecessor entity. For purposes of
this Agreement, "Tax Returns" means all reports, returns, declarations,
statements or other information required to be supplied to a taxing authority in
connection with Taxes.

            (a) Target has (i) timely filed all Tax Returns required to be filed
by it and all such Tax Returns are true and complete in all respects, (ii) paid
all Taxes due (whether or not required to be shown on such Tax Returns), and
(iii) paid all Taxes for which a notice of assessment or collection has been
received (other than amounts being contested in good faith by appropriate
proceedings and for which adequate reserves have been established on the books
of the Target), except, in the case of clause (i), (ii) or (iii), for any such
filings or, payments which are not reasonably likely, individually or in the
aggregate, to have a Material Adverse Effect on Target. The unpaid Taxes of
Target for tax periods through the date of the balance sheet contained in the
Interim Financial Statements do not exceed the accruals and reserves for Taxes
(excluding reserves for deferred Taxes) set forth on the balance sheet contained
in the Interim Financial Statements by an amount that is reasonably likely to
have a Material Adverse Effect on Target nor will unpaid Taxes of Target through
the Closing Date exceed the accruals or reserves for Taxes (excluding reserves
for deferred Taxes on the financial statements and the books and records of
Target) on the Closing Date. Neither the IRS nor any other taxing authority has
asserted any claim for Taxes, or to the Knowledge of Target or the Warranting
Shareholders, is threatening to assert any claims for Taxes, which claims,
individually or in the aggregate, are reasonably likely to have a Material
Adverse Effect on Target; no waivers of time to assess any Tax are in effect and
no requests for waiving of the time to assess any Tax are pending. Target has
withheld or collected and paid over to the appropriate governmental authorities
(or are properly holding for such payment) all Taxes required by law to be
withheld or collected, except for amounts which are not reasonably likely,
individually or in the aggregate, to have a Material Adverse Effect on Target.
There are no Liens for Taxes upon the assets of Target (other than liens for
taxes that are not yet due or that are being contested in good faith by
appropriate proceedings), except for Liens which are not reasonably likely,
individually or in the aggregate, to have a Material Adverse Effect on Target.
No Tax authority in a jurisdiction


                                       18
<PAGE>

where the Target does not file Tax Returns has made a claim, assertion or, to
Target's Knowledge, threat that the Target is or may be subject to Tax in such
jurisdiction except as would otherwise not be reasonably likely, individually or
in the aggregate, to have a Material Adverse Effect on Target.

            (b) Target is not and never has been a party to or bound by any Tax
indemnity, Tax sharing or Tax allocation agreement (whether written or unwritten
or arising under operation of federal law as a result of being a member of a
group filing consolidated or combined Tax Returns, under operation of any state
or local laws as a result of being a member of a combined, consolidated or
unitary group, or under comparable laws of any other foreign jurisdiction) nor
does Target owe any amount under any such agreement.

            (c) Target is not a "consenting corporation" within the meaning of
Section 341(f) of the Code (or any predecessor provision), and none of the
assets of Target are subject to an election under Section 341(f) of the Code (or
any predecessor provision).

            (d) Target is not and has never been a United States real property
holding corporation with the meaning of Section 897(c)(2) of the Code.

            (e) Target has not made any payments, is not obligated to make any
payments, nor is it a party to any agreement that could obligate it, Acquirer or
its Affiliates to make any payments that will be an "excess parachute payment"
under Section 280G of the Code as a result of the transactions contemplated by
this Agreement.

      Section 3.12. Litigation. There is no action, suit, investigation,
arbitration or proceeding pending or, to the Knowledge of Target or the
Warranting Shareholders, threatened against or affecting Target or any of its
properties or rights (including without limitation no charge of patent and/or
trademark infringement), by or before any Governmental Entity, or any basis in
fact therefor known to Target, against or involving Target or, any of its
officers, directors, employees or consultants (in all instances, in their
capacity as such), assets, business or products, whether at law or in equity.
The Target Disclosure Schedule accurately describes each action, suit,
investigation, arbitration or proceeding brought against or affecting Target or
any of its properties or assets (including any of its patents, trademarks or
other intellectual property) or to which Target was a party. With respect to
each litigation or claim described in the Target Disclosure Schedule, copies of
all pleadings, filings, correspondence with opposing parties and their counsel,
opinions of counsel, results of studies, judgments, orders, attachments,
impositions of or recordings of Liens and other documents have been furnished or
made available to Acquirer.

      Section 3.13. Compliance with Laws. Target has complied in all material
respects with all applicable laws (including rules, regulations, codes, plans,
injunctions, judgments, orders, decrees, rulings and charges thereunder) of any
Governmental Entity relating to or affecting the operation, conduct or ownership
of its properties or businesses. No investigation or review by any Governmental
Entity (including without limitation any audit or similar review by any federal,
foreign, state or local taxing authority) with respect to Target or, to the
extent that such review or


                                       19
<PAGE>

investigation relates to Target, the Warranting Shareholders, is pending or, to
the Knowledge of Target or the Warranting Shareholders, threatened, nor has any
Governmental Entity indicated in writing to Target or the Warranting
Shareholders an intention to conduct the same. Neither Target nor, to the
Knowledge of Target or the Warranting Shareholders, any director, officer,
consultant or employee of Target (in all instances, in their capacity as such),
is in default with respect to any order, writ, injunction or decree known to or
served upon Target of any Governmental Entity. There is no existing law, rule,
regulation or order, whether federal, state, local, municipal or foreign, which
would prohibit or materially restrict Target from, or otherwise materially
adversely affect Target in, conducting its business in any jurisdiction in which
it is now conducting business or in which it currently proposes to conduct
business.

      Section 3.14. Title to and Condition of Property.

            (a) Target owns no real property. Each lease or agreement under
which Target is a lessee or lessor of any property, real or personal, is a valid
and binding agreement of Target and, to the Knowledge of Target or the
Warranting Shareholders, the other party thereto, without any default thereunder
by any other party thereto. No event has occurred and is continuing which, with
due notice or lapse of time or both, would constitute a default or event of
default by Target under any such lease or agreement or, to the Knowledge of
Target, by any other party thereto. Target's possession of such property has not
been disturbed and no claim has been asserted, whether oral or in writing
against Target adverse to its rights in such leasehold interests.

            (b) All buildings, structures, appurtenances and material items of
machinery, equipment and other tangible assets used by Target are in good
operating condition and repair, normal wear and tear excepted, are usable in the
ordinary course of business, are adequate and suitable for the uses to which
they are being put and conform in all material respects to all applicable laws,
ordinances, codes, rules, regulations and authorizations relating to their
construction, use and operation. To the Knowledge of Target, Target's premises
or equipment are not in need of maintenance or repairs other than ordinary
routine maintenance and repairs which are not material, individually or in the
aggregate, in nature or cost, and no such maintenance or repair has
intentionally been delayed, deferred or prolonged.

      Section 3.15. Environmental Matters.

            (a) Except as would not have an Environmental Material Adverse
Effect, Target has been and is currently being operated in compliance with all
applicable limitations, restrictions, conditions, standards, prohibitions,
requirements and obligations of Environmental Laws and related orders of any
court or other governmental authority; Target is not required to obtain any
permits or licenses pursuant to any Environmental Law to conduct its business as
presently conducted;

            (b) There are not any existing, pending or, to the Knowledge of the
Target or the Warranting Shareholders, threatened actions, suits, claims,
investigations, inquiries or proceedings by or before any court or any other
governmental entity directed against any Target that pertain or


                                       20
<PAGE>

relate to (1) any remedial obligations under any applicable Environmental Law,
(2) violations by Target of any Environmental Law, (3) personal injury or
property damage claims relating to a release of chemicals or Hazardous
Substances, or (4) response, removal, or remedial costs under the Comprehensive
Environmental Response, Compensation, and Liability Act ("CERCLA"), 42 U.S.C.ss.
9601 et seq. the Resource Conservation and Recovery Act ("RCRA"), 42 U.S.C. ss.
6901 et seq., or any similar state or federal laws;

            (c) To the Knowledge of the Target and the Warranting Shareholders,
no portion of any real property leased by Target is listed on the National
Priorities List ("NPL") or the Comprehensive Environmental Response,
Compensation, and Liability Information System ("CERCLIS") under CERCLA, or any
similar ranking or listing under any state law. Except as would not have an
Environmental Material Adverse Effect, no facts or circumstances exist which
could reasonably be expected to result in any liability to Target or Acquirer
with respect to the current or past business and operations of Target in
connection with (i) any release, transportation or disposal of any Hazardous
Substances, or (ii) any action taken or omitted that was not in full compliance
with or was in violation of any applicable Environmental Law.

      Section 3.16. Contracts.

            (a) The Target Disclosure Schedule contains a complete list of all
currently effective written or oral (i) employment contracts, arrangements or
policies of Target which may not be immediately terminated without penalty (or
any augmentation or acceleration of benefits); (ii) leases, sales contracts and
other agreements with respect to any property, real or personal, of Target,
except for leases of personal property involving, on an annual basis, less than
$25,000 individually and $50,000 in the aggregate; (iii) contracts or
commitments for capital expenditures or acquisitions in excess of $25,000 on an
annual basis for one project or set of related projects; (iv) agreements,
contracts, indentures or other instruments relating to the borrowing of money,
or the guarantee of any obligation (third party or otherwise) for the borrowing
of money (excluding routine checking account overdraft agreements); (v)
contracts or agreements providing for any covenant not to compete by Target or
otherwise restricting in any way Target's engaging in any business activity
(including a description of the businesses to which the covenant not to compete
applies); (vi) contracts or agreements relating to consultancies, professional
retentions, agency, sales or distributorship arrangements pertaining to Target
or its products or activities involving in excess of $25,000 on an annual basis;
(vii) contracts, agreements or commitments requiring Target to indemnify or hold
harmless any Person; (viii) all contracts with any customer or supplier that
cannot be terminated without penalty in excess of $50,000 by Target within one
year; (ix) any agreement, contract, arrangement or understanding, written or
oral with any Affiliate, licensee or Shareholder; (x) any license or agreement
granting or restricting the right of Target to use a trade name, trademark,
logo, patent, software or other Intellectual Property; and (xi) contracts,
agreements, arrangements or commitments, other than the foregoing, which could
reasonably be considered material to Target's business (all contracts,
agreements, arrangements or commitments to which Target is a party, whether or
not listed on the Target Disclosure Schedule, being hereinafter referred to as
"Contracts"). True and correct copies of all the Contracts listed on the Target
Disclosure


                                       21
<PAGE>

Schedule have been furnished or made available to Acquirer. All customer
contracts entered into by Target are substantially in the form of the form
customer contract provided by Target to Acquirer. All Contracts are valid and
binding obligations of Target, and to the Knowledge of Target, of the other
party or parties thereto and Target has duly performed its obligations
thereunder to the extent such obligations have accrued, and no breach or default
thereunder by Target or, to the Knowledge of Target, any other party thereto has
occurred that could impair the ability of Target to enforce any rights
thereunder. There are no material liabilities of Target or, to the Knowledge of
Target or the Warranting Shareholders, any other party to any of the Contracts
arising from any breach of or default in any provision thereof, nor has there
occurred any breach or default thereof by Target which would permit the
acceleration of any obligation of any party thereto or the creation of a Lien
upon any asset(s) of Target.

            (b) The consummation of the Merger or the other transactions
contemplated hereby will not result in any violation or termination of, default
or loss of benefit under, or give rise to a right of termination under, the
terms of any Contract. There are no negotiations pending or in progress to
revise, in any material respect, any Contract.

      Section 3.17. Employee Plans.

            (a) Section 3.17 of the Target Disclosure Schedule lists each of the
following plans, contracts, policies and arrangements which is sponsored,
maintained or contributed to by, or otherwise binding upon Target or its ERISA
Affiliates for the benefit of any current or former employee, director or other
personnel: (i) any "employee benefit plan," as such term is defined in Section
3(3) of ERISA, whether or not subject to the provisions of ERISA, (ii) any
personnel policy, and (iii) any other employment, consulting (for annual
compensation in excess of $20,000), collective bargaining, stock option, stock
bonus, stock purchase, phantom stock, incentive, bonus, deferred compensation,
retirement, severance, vacation, dependent care, employee assistance, fringe
benefit, medical, dental, sick leave, death benefit, change in control, golden
parachute or other compensatory plan, contract, policy or arrangement which is
not an employee benefit plan as defined in Section 3(3) of ERISA (each such
plan, contract, policy and arrangement described in (i), (ii) or (iii) above
being herein referred to as an "Employee Plan").

            (b) With respect to each Employee Plan, Target has delivered or made
available to Acquirer true and complete copies of (i) each contract, plan
document, policy statement, summary plan description and other written material
governing or describing the Employee Plan and/or any related funding
arrangements (including, without limitation, any related trust agreement or
insurance company contract) or, if there are no such written materials, a
summary description of the Employee Plan, and (ii), where applicable, (A) the
last annual report (5500 series) filed with the Internal Revenue Service or the
Department of Labor; (B) the most recent balance sheet and financial statement;
(C) the most recent actuarial report or valuation statement; and (D) the most
recent determination letter issued by the Internal Revenue Service, as well as
any other determination letter, private letter ruling, opinion letter or
prohibited transaction exemption issued by the Internal


                                       22
<PAGE>

Revenue Service or the Department of Labor since inception and any application
therefor which is currently pending.

            (c) Each Employee Plan has been maintained and administered in
accordance with its terms and in material compliance with the provisions of
applicable law, including, without limitation, applicable disclosure, reporting,
funding and fiduciary requirements imposed by ERISA and/or the Code. All
contributions, insurance premiums, benefits and other payments required to be
made to or under each Employee Plan have been made timely and in accordance with
the governing documents and applicable law. With respect to each Employee Plan,
(i) no application, proceeding or other matter is pending before the Internal
Revenue Service, the Department of Labor or any other governmental agency, (ii)
no action, suit, proceeding or claim (other than routine claims for benefits) is
pending or, to Target's Knowledge, threatened, and (iii) to the Knowledge of
Target, no facts exist which could give rise to an action, suit, proceeding or
claim which, if asserted, could result in a material liability or expense to
Target, any of its ERISA Affiliates or the plan assets.

            (d) With respect to each Employee Plan which is an "employee benefit
plan" within the meaning of Section 3(3) of ERISA or which is a "plan" within
the meaning of Section 4975(e) of the Code, there has occurred no transaction
which is prohibited by Section 406 of ERISA or which constitutes a "prohibited
transaction" under Section 4975(c) of the Code and with respect to which a
prohibited transaction exemption has not been granted and is not currently in
effect.

            (e) With respect to each funded Employee Plan which is an employee
pension plan within the meaning of Section 3(2) of ERISA, (i) the Employee Plan
is a qualified plan under Section 401(a) of the Code, and its related trust is
exempt from federal income taxation under Section 501(a) of the Code, (ii) a
favorable IRS determination letter is currently in effect and, since the date of
the last determination letter, the Employee Plan has not been amended or
operated in a manner which would adversely affect its qualified status and no
event has occurred which has caused or could cause the loss of such status, and
(iii) there has been no termination or partial termination within the meaning of
Section 411(d)(3) of the Code.

            (f) Neither Target nor its ERISA Affiliates has ever maintained or
been obligated to contribute to a single employer, multiple employer or
multi-employer pension plan (within the meaning of Section 3(2) of ERISA) which
is or was covered by Title IV of ERISA or by Section 302 of ERISA or Section 412
of the Code, and neither Target nor its ERISA Affiliates has incurred or may
incur any direct or indirect liability under Title IV of ERISA or Section 302 of
ERISA or Section 412 of the Code, contingent or otherwise.

            (g) Target and its ERISA Affiliates have complied in all respects
with the provisions of Section 4980B of the Code with respect to any Employee
Plan which is a group health plan within the meaning of Section 5001(b)(1) of
the Code. Neither Target nor its ERISA Affiliates maintains, contributes to, or
is obligated under any plan, contract, policy or arrangement providing health or
death benefits (whether or not insured) to current or former employees or other
personnel beyond the termination of their employment or other services, except
as required in Section 4980B


                                       23
<PAGE>

of the Code. Each Employee Plan may be unilaterally terminated and/or amended by
Target or its ERISA Affiliates at any time.

            (h) The consummation of the transactions contemplated by this
Agreement will not (either alone or in conjunction with another event, such as a
termination of employment or other services) entitle any employee or other
person to receive severance or other compensation which would not otherwise be
payable absent the consummation of the transactions contemplated by this
Agreement or cause the acceleration of the time of payment or vesting of any
award or entitlement under any Employee Plan, other than the acceleration of
vesting with respect to certain outstanding Target Options as set forth on
Schedule 3.17.

      Section 3.18. Labor Matters. Target is not a party to or otherwise bound
by any collective bargaining agreement, contract or other agreement or
understanding with a labor union or labor organization, nor, as of the date
hereof, is Target the subject of any proceeding asserting that Target has
committed an unfair labor practice or is seeking to compel it to bargain with
any labor union or labor organization nor, as of the date of this Agreement, is
there pending or, to the Knowledge of Target, threatened, any material labor
strike, dispute, walkout, work stoppage, slow-down or lockout involving Target.

      Section 3.19. Year 2000 Compliance. The Software that is proprietary to
Target and, to the Knowledge of Target, Target's computer hardware (the
"Hardware") and all software provided by third parties for Target's use in its
business or licensed by Target from third parties (the "Other Software") are
Year 2000 Compliant or will be Year 2000 Compliant by November 30, 1999, except
to the extent that any failure to be Year 2000 Compliant, either individually or
in the aggregate, would not have a Material Adverse Effect on Target. The term
"Year 2000 Compliant" as used herein means that the Software, Hardware and Other
Software (1) are capable of recognizing, processing, managing, representing,
interpreting, and manipulating correctly date related data for dates earlier and
later than January 1, 2000, including, but not limited to, calculating,
comparing, sorting, storing, tagging and sequencing, without resulting in or
causing logical or mathematical errors or inconsistencies in any user-interface
functionalities or otherwise, including data input and retrieval, data storage,
data fields, calculations, reports, processing, or any other input or output,
(2) have the ability to provide data recognition for any date element
(including, but not limited to, date- related data represented without a century
designation, date-related data whose year is represented by only two digits and
date fields assigned special values), (3) have the ability to automatically
function into and beyond the year 2000 without human intervention and without
any change in operations associated with the advent of the year 2000, (4) have
the ability to correctly interpret data, dates and time into and beyond the year
2000, (5) have the ability not to produce noncompliance in existing information,
nor otherwise corrupt such data into and beyond the year 2000, (6) have the
ability to correctly process after January 1, 2000 data containing dates before
that date, and (7) have the ability to recognize all "leap years," including
February 29, 2000.

      Target does not believe that the lack of ability of its Software or
computer systems to properly interface with internal and external applications
and systems of third parties with whom


                                       24
<PAGE>

Target exchanges data electronically (including without limitation panelists,
customers, clients, suppliers, service providers, subcontractors, processors,
converters, shippers, warehousemen, outsources, data processors, regulatory
agencies and banks) will have a Material Adverse Effect on Target.

      Section 3.20. Insurance Policies. The Target Disclosure Schedule contains
a correct and complete description of all insurance policies covering Target,
its businesses, employees, agents and assets. Each such policy is in full force
and effect and is of the type and in the amount customarily carried by Persons
conducting businesses or owning assets similar to those at the Target. Such
policies shall not, pursuant to their terms, in any way be affected by, or
terminate or lapse by reason of, this Agreement. All retroactive premium
adjustments under any worker's compensation policy of Target have been recorded
in the Financial Statements in accordance with generally accepted accounting
principles and are reflected in the Financial Statements. All premiums with
respect to such insurance policies have been paid on a timely basis, and no
notice of cancellation or termination has been received with respect to any such
policy. Target has not failed to give any notice or present any claim thereunder
in due and timely fashion. There are no pending claims against such insurance by
or on behalf of Target as to which the insurers have denied coverage or
otherwise reserved rights. Target has not been refused any insurance with
respect to its assets or operations, nor has their coverage been limited, by any
insurance carrier to which it has applied for any such insurance with which it
has carried insurance since the date of its inception.

      Section 3.21. Records. Target has records that accurately and validly
reflect its transactions and accounting controls sufficient to insure that such
transactions are (a) in all material respects executed in accordance with their
respective management's general or specific authorization and (b) recorded in
conformity with generally accepted accounting principles.

      Section 3.22. Brokerage Fees. Neither Target nor any of its Affiliates has
retained any financial advisor, broker, agent or finder or paid or agreed to pay
any financial advisor, broker, agent or finder on account of this Agreement or
any of the agreements contemplated hereby or any transaction contemplated hereby
or thereby or any transaction of like nature that would be required to be paid
by Target.

      Section 3.23. Suppliers and Customers.

            (a) The Target Disclosure Schedule lists (i) all suppliers of Target
to which Target made payments during the period beginning January 1, 1999
through September 30, 1999, or expects to make payments during the period
beginning January 1, 1999 through September 30, 1999, in excess of $25,000 in
the aggregate, (ii) all customers of Target during the period beginning January
1, 1999 through September 30, 1999, or customers that Target expects will pay to
Target during the period beginning January 1, 1999 through September 30, 1999,
more than $25,000 in the aggregate and (iii) all other suppliers and customers
the loss of any of which, individually or in the aggregate with all other
suppliers or customers affiliated with such supplier or customer, could have a
Material Adverse Effect on Target.


                                       25
<PAGE>

            (b) To Target's Knowledge, none of Target's customers or suppliers
listed on the Target Disclosure Schedule intend to cease purchasing from,
selling to or dealing with Target nor has any information been brought to their
attention which might lead them to believe any such customer or supplier intends
to alter in any material respect the amount of such purchases, sales or the
extent of dealings with Target or to materially alter such purchases, sales or
dealings in the event of the consummation of the Merger.

      No customer has informed Target that it intends to cancel outstanding or
currently anticipated contracts with Target.

            (c) Neither Target nor, to the Knowledge of Target or the Warranting
Shareholders, any of its officers, directors or Affiliates nor any entity
controlled by one of more of the foregoing:

                  (i) owns, directly or indirectly, any interest in (excepting
            less than 2% stock holdings for investment purposes in securities of
            publicly held and traded companies), or is an officer, director,
            employee or consultant of, any Person which is, or is engaged in
            business as, a competitor of Target;

                  (ii) owns, directly or indirectly, in whole or in part, any
            material tangible or intangible property that Target uses in the
            conduct of their respective businesses or its business; or

                  (iii) has any cause of action or other claim whatsoever
            against, or owes any amount to, Target, except for claims in the
            ordinary course of business such as for accrued vacation pay,
            accrued benefits under employee benefit plans, and similar matters
            and agreements existing on the date hereof.

      Section 3.24. Intellectual Property.

            (a) The Target Disclosure Schedule contains an accurate and complete
list of all domestic and foreign patents, patent applications, patent licenses,
software licenses (other than generally available pre-packaged "off-the-shelf"
software) and licenses, trade names, trademarks, copyrights, service marks,
trademark registrations and applications, service mark registrations and
applications, and copyright registrations and applications owned (in whole or in
part), licensed to any extent or used or anticipated to be used by Target in the
conduct of its business (collectively, and, together with the know how,
"Intellectual Property"). Target either owns all right, title and interest in
and to, or possesses the exclusive right to use, the Intellectual Property,
trade secrets and technology used in the conduct of its business (including,
without limitation, the exclusive right to use and license the same (in the
jurisdiction(s) where registered in the case of trademarks, service marks and
copyrights)) and each item constituting part of the Intellectual Property in
which Target has an ownership or license interest has been, to the extent
indicated on the Target Disclosure


                                       26
<PAGE>

Schedule, duly registered with, filed in or issued by, as the case may be, the
United States Patent and Trademark Office or such other Governmental Entities as
are indicated on the Target Disclosure Schedule and such registrations, filings
and issuances remain in full force and effect. To Target's knowledge, no claim
of infringement or misappropriation of patents, trademarks, trade names, service
marks, copyrights or trade secrets of any other Person has been made nor
threatened against Target. To Target's knowledge, Target is not infringing or
misappropriating any patents, trademarks, trade names, service marks, copyrights
or trade secrets of any other Person. Except as set forth on the Target
Disclosure Schedule and without limiting any other provisions hereof, Target has
not granted any license, franchise or permit to any Person to use any of the
Intellectual Property of Target and no other Person has the right to use the
same trademarks, service marks or trade names used by Target or any similar
trademarks, service marks or trade names likely to lead to confusion. Since
inception Target has not conducted its business under any corporate, trade or
fictitious name. The Target Disclosure Schedule sets forth all trademark
registrations and applications, service mark registrations and applications and
copyright registrations and applications abandoned by Target since its
inception.

            (b) The University of Washington has no right, title or interest in
and to any of the Intellectual Property nor has the University of Washington
threatened or asserted any claim of any nature whatsoever against Target or any
of the Shareholders in relation to the Intellectual Property.

            (c) To Target's Knowledge, Acquirer and Target will have access to
the Data, and will be able to use and exploit the Data, on the same terms, and
subject to the same conditions, that existed prior to the date of this
Agreement. "Data" means the Internet traffic data that Target currently uses, a
written description of which has been provided to Acquirer.

      Section 3.25. Licenses. Target has all licenses, permits, consents and
other governmental certificates, authorizations and approvals required by
applicable federal, state, local or foreign Governmental Entity for the conduct
of its business and the use of its properties as presently conducted or used,
including, without limitation, all licenses required under applicable federal,
state, local, municipal or foreign law relating to public health and safety, or
employee health and safety except where the failure to have such license,
permit, consent, certificate, authorization or approval would not have a
Material Adverse Effect on Target (collectively, "Licenses"). The Target
Disclosure Schedule contains a true and complete list of the Licenses. All of
the Licenses are in full force and effect and no action or claim is pending nor,
to the Knowledge of Target or the Warranting Shareholders, is threatened to
revoke or terminate any License or declare any License invalid in any material
respect. Target has taken all necessary action to maintain such Licenses.

      The Target Disclosure Schedule contains a true and complete list of all
federal, state, local, municipal and foreign governmental or judicial consents,
orders, decrees and other compliance agreements relating to Target or any of its
businesses under which Target is operating or bound.


                                       27
<PAGE>

      Section 3.26. No Illegal or Improper Transactions. Neither Target nor any
of its directors, officers, employees, or, to Target's knowledge, agents or
Affiliates, has directly or indirectly used funds or other assets of Target or
made any promise or undertaking in such regard, for (a) illegal contributions,
gifts, entertainment or other expenses relating to political activity; (b)
illegal payments to or for the benefit of governmental officials or employees,
whether domestic or foreign; (c) illegal payments to or for the benefit of any
person, firm, corporation or other entity, or any director, officer, employee,
agent or representative thereof; or (d) the establishment or maintenance of a
secret or unrecorded fund; and there have been no false or fictitious entries
made in the books or records of Target with respect to any of the foregoing.

      Section 3.27. Restrictive Documents and Territorial Restrictions. Target
is not subject to, or a party to, any charter, by-law, mortgage, Lien, lease,
license, permit, agreement, contract, instrument, law, rule, ordinance,
regulation, order, judgment or decree, or any other restriction of any kind or
character, which adversely affects the business, prospects, operations or
condition (financial or otherwise) of its business or any of its assets or
properties in any material respect, or which would prevent consummation of the
transactions contemplated hereby, or the continued operation of its business
after the date hereof on substantially the same basis as heretofore operated or
which would materially restrict the ability of Target to acquire any property or
conduct business in any area.

      Section 3.28. Bank Accounts. The Target Disclosure Schedule contains a
true, correct and complete list of the names and locations of all banks, trust
companies, savings and loan associations and other financial institutions at
which Target maintains safe deposit boxes or accounts of any nature.

      Section 3.29. No Misleading Statements. This Agreement, the information
and schedules referred to herein, when considered as a whole, and the
certificates that have been furnished to Acquirer in connection with the
transactions contemplated hereby do not include any untrue statement of a
material fact and do not omit to state any material fact necessary to make the
statements contained herein or therein, in light of the circumstances under
which they were made, not misleading. There is no fact known to Target which
materially adversely affects or in the future could reasonably be expected to
materially adversely affect the business, condition (financial or otherwise),
property or assets of its business which has not been set forth herein.

      Section 3.30. Hart-Scott-Rodino. Target is not an entity engaged in
manufacturing which has total assets of $10,000,000 or more and does not meet
the requirements set forth in Section 7a of the Clayton Act, 15 U.S.C. ss. 18a.

      Section 3.31. Investors' Rights Agreement and Right of First Refusal and
Co-Sale Agreement. The Investors' Rights Agreement between the Shareholders and
Target dated January 15, 1999 and the Right of First Refusal and Co-Sale
Agreement dated January 15, 1999 between Will Hodgman, Dan Weld, Linden Rhoads
and Target will be terminated or cancelled with effect from the Closing Date.


                                       28
<PAGE>

ARTICLE IV.

               REPRESENTATIONS AND WARRANTIES OF THE SHAREHOLDERS

Each Shareholder severally but not jointly agrees and represents and warrants to
Acquirer and Acquirer Sub as follows:

      Section 4.01. Ownership. Such Shareholder holds of record and owns
beneficially the number of shares of Target Common Stock and Target Preferred
Stock as applicable, set forth next to his, her or its name in Schedule 1.0
hereto, free and clear of any Liens. There are no outstanding options, warrants,
convertible securities, calls, rights, commitments, court orders, proceedings,
preemptive rights or agreements or instruments or understandings of any
character to which such Shareholder is a party or by which he, she or it is
bound, obligating him, her or it to deliver or sell, or cause to be issued,
delivered or sold, contingently or otherwise, any shares of Target Common Stock
and Target Preferred Stock, as applicable, owned by him, her or it or any
securities or obligations convertible into or exchangeable for such shares or to
grant, extend or enter into any such option, warrant, convertible security,
call, right, commitment, preemptive right or agreement. Such Shareholder is not
a party to any voting trust, proxy, or other agreement, commitment or
understanding, or any court order proceeding, with respect to the voting,
dividend rights or disposition of any capital stock of Target, except as
disclosed on the Target Disclosure Schedule. At the Closing, good and marketable
title to the shares of Target Capital Stock being sold by such Shareholder will
pass to Acquirer Sub free and clear of all Liens.

      Section 4.02. Authorization. Such Shareholder has all requisite power and
authority to enter into this Agreement and each of the other agreements
contemplated hereby, and to carry out his, her or its obligations under this
Agreement and each of the other agreements contemplated hereby and to consummate
the transactions contemplated hereby and thereby. The execution and delivery by
such Shareholder of this Agreement and each of the other agreements contemplated
hereby, the consummation of the transactions contemplated hereby and thereby and
the performance by such Shareholder of his, her or its obligations hereunder and
thereunder have been duly authorized by all necessary corporate, partnership,
trust or analogous action on the part of such Shareholder, if applicable. Each
of this Agreement and the other agreements contemplated hereby have been duly
executed and delivered by such Shareholder and assuming due authorization,
execution and delivery by Target, Acquirer and Acquirer Sub constitutes the
legal, valid and binding obligation of such Shareholder, enforceable against
such Shareholder in accordance with their respective terms (except as the
enforceability thereof may be limited by any applicable bankruptcy, insolvency
or other laws affecting creditors' rights generally or by general principles of
equity, regardless of whether such enforceability is considered in equity or at
law).

      Section 4.03. No Violation. The execution and delivery of this Agreement
and each of the other agreements contemplated hereby by such Shareholder does
not, and the consummation by such Shareholder of the transactions contemplated
hereby and thereby, and compliance with the terms hereof and thereof will not,
(a) conflict with, or result in any violation of or default under, any provision
of such Shareholder's certificate of incorporation or by-laws, partnership
agreement or


                                       29
<PAGE>

trust agreement (or other analogous organizational documents), if applicable, or
(b) conflict with, or result in a breach or violation of or default under, or
accelerate the performance required by, the terms of any law, statute,
regulation, order, judgment or decree or any agreement, contract, indenture or
other instrument to which such Shareholder is a party or to which any of his,
her or its properties are subject, or constitute a default or loss of any right
thereunder or an event which, with the lapse of time or notice or both, might
result in a default or loss of any right thereunder or the creation of any Lien
upon the shares of Target owned by, or the Merger Consideration to be received
by, such Shareholder.

      Section 4.04. Approvals. The execution and delivery of this Agreement and
each of the other agreements contemplated hereby and the consummation of the
transactions contemplated hereby and thereby by such Shareholder will not
require the consent, approval, order or authorization of any Governmental Entity
or Regulatory Authority or any other Person under any statute, law, rule,
regulation, permit, license, agreement, indenture or other instrument to which
such Shareholder is a party or to which any of his, her or its properties are
subject, and no declaration, filing or registration with any Governmental Entity
or Regulatory Authority is required by such Shareholder in connection with the
execution and delivery of this Agreement and each of the other agreements
contemplated hereby, the consummation by such Shareholder of the transactions
contemplated hereby and thereby or the performance by such Shareholder of his,
her or its obligations hereunder and thereunder.

      Section 4.05. Brokerage Fees. Such Shareholder has not retained any
financial advisor, broker, agent or finder or paid or agreed to pay any
financial advisor, broker, agent or finder on account of this Agreement or any
transaction contemplated hereby or any transaction of like nature that would be
required to be paid by such Shareholder.

      Section 4.06. Litigation. There is no claim, suit, action, proceeding or
investigation (whether at law or equity, before or by any Federal, state,
foreign, local or municipal commission, court, tribunal, board, agency or
instrumentality, or before any arbitrator) pending or, to the Knowledge of such
Shareholder, threatened against or affecting such Shareholder, the outcome of
which would in any manner impair his, her or its ability to perform his, her or
its obligations hereunder or against the transactions contemplated by this
Agreement.

                                   ARTICLE V.
           REPRESENTATIONS AND WARRANTIES OF ACQUIRER AND ACQUIRER SUB

      Except as set forth (by reference to the applicable Section of this
Agreement) in the disclosure schedule delivered by Acquirer and Acquirer Sub to
Target and the Shareholders on the date hereof (the "Acquirer Disclosure
Schedule"), a copy of which is attached hereto as Schedule 5.0, Acquirer and
Acquirer Sub hereby jointly and severally agree and represent and warrant to
Target and the Shareholders as follows:


                                       30
<PAGE>

      Section 5.01. Organization, Etc. Acquirer is a corporation duly organized,
validly existing and in good standing under the laws of the State of Delaware
and has full corporate power and authority to conduct its business as it is now
being conducted and to own, operate or lease the properties and assets it
currently owns, operates or holds under lease and is duly qualified to do
business and is in good standing in each jurisdiction in which the failure to be
so qualified and in good standing would have a Material Adverse Effect on
Acquirer. Acquirer Sub is a corporation duly organized and validly existing
under the laws of the State of Washington and has full corporate power and
authority to conduct its business as it is now being conducted and to own,
operate or lease the properties and assets it currently owns, operates or holds
under lease. Acquirer has delivered to Target a true and correct copy of the
Certificate or Articles of Incorporation and Bylaws of Acquirer and Acquirer
Sub, each as amended to date. Neither Acquirer nor any of its subsidiaries is in
violation of any material provisions of its Certificate of Incorporation or
Bylaws.

      Section 5.02. Capitalization. The authorized capital stock of Acquirer
consists of (i) 60,000,000 shares of common stock, of which, as of September 30,
1999, 17,414,170 shares are issued and outstanding and no shares are held in
treasury and (ii) 5,000,000 shares of preferred stock of which no shares are
issued and outstanding. The shares of Acquirer Common Stock to be issued
pursuant to the Merger at the Closing, when issued pursuant to this Agreement,
will be duly authorized, validly issued, fully paid and nonassessable and will
not have been issued in violation of any preemptive rights or of any federal or
state law. The authorized capital stock of Acquirer Sub consists of 100 shares
of common stock, par value $.01 per share, all of which have been validly
issued, are fully paid and nonassessable and are owned by Acquirer free and
clear of any Liens.

      Section 5.03. Authorization. Each of Acquirer and Acquirer Sub has all
requisite corporate power and authority to enter into this Agreement and each of
the other agreements contemplated hereby, to carry out their respective
obligations under this Agreement and each of the other agreements contemplated
hereby and to consummate the transactions contemplated hereby and thereby. The
execution and delivery by Acquirer and Acquirer Sub of this Agreement and each
of the other agreements contemplated hereby to which it is a party, the
consummation of the transactions contemplated hereby and thereby and the
performance by Acquirer and Acquirer Sub of their respective obligations
hereunder and thereunder have been duly authorized by all necessary corporate
action on the part of Acquirer and Acquirer Sub, as applicable. Each of this
Agreement and the other agreements contemplated hereby to which it is a party
has been duly executed and delivered by Acquirer and Acquirer Sub and
constitutes the legal, valid and binding obligation of Acquirer and Acquirer
Sub, as applicable, enforceable against Acquirer and Acquirer Sub, as
applicable, in accordance with their respective terms (except as the
enforceability thereof may be limited by any applicable bankruptcy, insolvency
or other laws affecting creditors' rights generally or by general principles of
equity, regardless of whether such enforceability is considered in equity or at
law).

      Section 5.04. No Violation. The execution and delivery of this Agreement
and each of the other agreements contemplated hereby by Acquirer and Acquirer
Sub do not, and the consummation by Acquirer and Acquirer Sub of the
transactions contemplated hereby and thereby, and compliance


                                       31
<PAGE>

with the terms hereof and thereof will not, (a) conflict with, or result in any
violation of or default or loss of any benefit under, any provision of
Acquirer's Certificate of Incorporation or Bylaws or the Articles of
Incorporation or Bylaws of Acquirer Sub; (b) conflict with, or result in a
breach or violation of or default or loss of any benefit under, or accelerate
the performance required by, the terms of any agreement, contract, indenture or
other instrument to which Acquirer or Acquirer Sub is a party or to which any of
their respective properties are subject, or constitute a default or loss of any
right thereunder or an event which, with the lapse of time or notice or both,
might result in a default or loss of any right thereunder or the creation of any
Lien upon any of the assets or properties of Acquirer or Acquirer Sub; or (c)
result in any suspension, revocation, impairment, forfeiture or nonrenewal of
any material Acquirer license.

      Section 5.05. Approvals. The execution and delivery of this Agreement and
each of the agreements contemplated hereby by Acquirer and Acquirer Sub and the
consummation of the transactions contemplated hereby and thereby will not
require the consent, approval, order or authorization of any Governmental Entity
or Regulatory Authority or any other Person under any statute, law, rule,
regulation, permit, license, agreement, indenture or other instrument to which
Acquirer or Acquirer Sub is a party or to which any of their respective
properties are subject, and no declaration, filing or registration with any
Governmental Entity or Regulatory Authority is required or advisable by Acquirer
or Acquirer Sub in connection with the execution and delivery of this Agreement
and each of the other agreements contemplated hereby, the consummation by
Acquirer or Acquirer Sub of the transactions contemplated hereby and thereby or
the performance by Acquirer or Acquirer Sub of their respective obligations
hereunder and thereunder, other than (a) the filing of the Nasdaq National
Market Notification Form for Listing of Additional Shares, (b) the filing of the
Articles of Merger in accordance with Washington Law, (c) compliance with any
applicable requirements under the Exchange Act, the Securities Act and the
Nasdaq National Market and state securities and "blue sky" laws, and (d) such
other filings or registrations with, or authorizations, consents or approvals
of, governmental bodies, agencies, officials or authorities the failure of which
to make or obtain would not have a Material Adverse Effect, or would not
materially adversely affect the ability of Acquirer or Acquirer Sub to
consummate the Merger.

      Section 5.06. Commission Filings. Acquirer has delivered to Target and the
Shareholders true, correct and complete copies of Acquirer's Prospectus (the
"Prospectus") dated as of May 6, 1999 included as part of Acquirer's
registration statement on Form S-1 as declared effective by the Commission on
May, 7 1999 (the "Registration Statement") and a copy of its Quarterly Report on
Form 10-Q for the quarter ended June 30, 1999 (the "10-Q") and each report,
registration statement (on a form other than S-8) and definitive proxy statement
filed by Acquirer with the Commission between January 1, 1999 and the date of
this Agreement (together with the Prospectus, the Registration Statement, and
the 10-Q, the "Public Filings"). Acquirer has timely filed since the date of the
Public Filings all the material required to be filed pursuant to the applicable
provisions of the Securities Act and pursuant to Section 13, 14 or 15(d) of the
Exchange Act. The Public Filings, as of their respective filing dates, did not
contain any untrue statement of a material fact or omitted to state any material
fact necessary in order to make the statements made therein, in the light of the
circumstances under which they were made, not misleading.


                                       32
<PAGE>

      Section 5.07. Absence of Undisclosed Liabilities. Acquirer has no material
obligations or liabilities of any nature (matured or unmatured, fixed or
contingent) other than (i) those set forth or adequately provided for in the
Balance Sheet included in the 10-Q heretofore provided to Target (the "Acquirer
Balance Sheet"), (ii) those incurred in the ordinary course of business and not
required to be set forth in the Acquirer Balance Sheet under generally accepted
accounting principles, and (iii) those incurred in the ordinary course of
business since the Acquirer Balance Sheet Date and consistent with past
practice.

      Section 5.08. Broker's and Finder's Fees. Acquirer has not incurred, nor
will it incur, directly or indirectly, any liability for brokerage or finders'
fees or agents' commissions or investment bankers' fees or any similar charges
in connection with this Agreement or any transaction contemplated hereby.

      Section 5.09. Valid Issuance. The Acquirer Common Stock to be issued in
the Merger will, when issued in accordance with the provisions of this
Agreement, be validly issued, fully paid and nonassessable and free and clear of
any Liens.

      Section 5.10. No Vote Required. No vote of the stockholders of Acquirer is
necessary to adopt and approve this Agreement, the Merger and the other
transactions contemplated by this Agreement, or to issue the Acquirer Common
Stock to be issued in the Merger.

      Section 5.11. Ownership of Acquirer Sub; No Prior Activities. Acquirer Sub
is a newly formed corporation that has conducted no business activity and was
formed solely for the purpose of engaging in the transactions contemplated by
this Agreement. As of the date hereof and the Effective Time, except for
obligations or liabilities incurred in connection with its incorporation or
organization and the transactions contemplated by this Agreement and except for
this Agreement, Acquirer Sub has not and will not incur, directly or indirectly,
through any subsidiary or affiliate, any obligations or liabilities or engaged
in any business activities of any type or kind whatsoever or entered into any
agreements or arrangements with any Person. Acquirer has no present plan or
intention to sell or otherwise dispose of any of the assets of Target acquired
in the Merger, except for dispositions in the ordinary course of business or
transfers described in Section 368(a)(2)(C) of the Code.

      Section 5.12. Litigation. There is no action, suit, investigation,
arbitration or proceeding pending or, to the Knowledge of Acquirer, threatened
against or affecting Acquirer or any of its subsidiaries or, to the Knowledge of
Acquirer or any of its subsidiaries, any of their respective directors or
officers (in their capacities as such) that could prevent, enjoin, or materially
alter or delay any of the transactions contemplated by this Agreement, or that
could reasonably be expected to have a Material Adverse Effect on Acquirer.

      Section 5.13. Financial Statement and Other Information. The consolidated
financial statements contained in the Public Filings: (i) complied in all
material respects with the published


                                       33
<PAGE>

rules and regulations of the Commission applicable thereto; (ii) were prepared
in accordance with generally accepted accounting principles applied on a
consistent basis throughout the periods covered, except as may be indicated in
the notes to such financial statements and (in the case of unaudited statements)
as permitted by Form 10-Q, and except that unaudited financial statements may
not contain footnotes and are subject to year-end audit adjustments; and (iii)
fairly present in all material respects the consolidated financial position of
Acquirer and its subsidiaries as of the respective dates thereof and the
consolidated results of operations of Acquirer and its subsidiaries for the
periods covered thereby.

      Section 5.14. Absence of Certain Changes or Events. Since June 30, 1999
(the "Acquirer Balance Sheet Date"), there has not occurred: (i) any change,
event or condition (whether or not covered by insurance) that has resulted in,
or might reasonably be expected to result in, a Material Adverse Effect to
Acquirer; (ii) any declaration, setting aside, or payment of a dividend or other
distribution with respect to the shares of Acquirer, or any direct or indirect
redemption, purchase or other acquisition by Acquirer of any of its shares of
capital stock; (iii) any material amendment or change to Acquirer's Certificate
of Incorporation or Bylaws; or (iv) any negotiation or agreement by Acquirer to
do any of the things described in the preceding clauses (i) through (iii) (other
than negotiations with Target and its representatives regarding the transactions
contemplated by this Agreement).

      Section 5.15. Intellectual Property. Acquirer owns or possesses valid and
enforceable licenses to all patents, patent rights, inventions, copyrights,
know-how (including trade secrets and other unpatented and/or unpatentable
proprietary or confidential information, systems or procedures), trademarks,
service marks and trade names ("Acquirer Intellectual Property") currently
employed by Acquirer in connection with the business now operated by it, except
where the failure to own or possess such Intellectual Property would not, singly
or in the aggregate, have a Material Adverse Effect. Acquirer has not received
any notice that the Acquirer Intellectual Property infringes or otherwise
violates any patent, copyright, trade secret, trademark or other proprietary
right of any third party.

                                   ARTICLE VI.
               COVENANTS OF TARGET AND THE WARRANTING SHAREHOLDERS

      Target and Warranting Shareholders agree that:

      Section 6.01. Conduct of Target. From the date hereof until the Closing,
Target shall conduct its business in the ordinary course, consistent with past
practice, and not enter into any transaction outside the ordinary course of
business. Without limiting the generality of the foregoing, from the date hereof
until the Closing, except as contemplated hereby and except to the extent that
Acquirer gives prior written consent:


                                       34
<PAGE>

            (a) Target will not adopt or propose any change in its Articles of
Incorporation or enter into any agreement or incur any obligation, the terms of
which would be violated by the consummation of the transactions contemplated by
this Agreement;

            (b) Except as contemplated by this Agreement, Target will not:

                  (i) enter into any written contract, agreement, plan or
            arrangement covering any director, officer or employee of Target
            that provides for the making of any payments, the acceleration of
            vesting of any benefit or right or any other entitlement contingent
            upon (A) the Merger or (B) the termination of employment after the
            Merger;

                  (ii) enter into or amend any employment, consulting or similar
            agreement (oral or written) to increase the compensation payable or
            to become payable by it to, or otherwise materially alter its
            employment or consulting relationship with, any of its officers,
            directors or consultants over the amount payable as of the date
            hereof, or increase the compensation payable to any other employees
            (other than (A) increases in the ordinary course of business,
            consistent with past practice, which, in the aggregate do not exceed
            $50,000 on an annual basis or otherwise have a Material Adverse
            Effect on Target, or (B) pursuant to plans disclosed in the Target
            Disclosure Schedule), or adopt or, except as required by applicable
            law to maintain a plan's tax-qualified status, amend any employee
            benefit plan or arrangement (oral or written); or

                  (iii) loan or advance any money to any officer, director,
            employee, shareholder or consultant of Target other than advances in
            the ordinary course of business which do not exceed $5,000 at any
            time outstanding to any one person;

            (c) Except pursuant to the exercise of Target Options and Target
Warrants and the conversion of Target Preferred Stock into Target Common Stock,
Target will not (i) purchase, acquire, issue, deliver, sell or authorize the
issuance, delivery or sale of any stock appreciation rights or of any shares of
its capital stock of any class or any securities convertible into or
exchangeable for, or rights, warrants or options to acquire, any such shares or
convertible or exchangeable securities, (ii) make any changes in its capital
structure or (iii) enter into any agreement or understanding or take any
preliminary action with respect to the matters referred to in clause (i) or (ii)
of this paragraph (c);

            (d) Target will keep in full force and effect its existing insurance
policies and will not modify or reduce the coverage thereunder;

            (e) Target will not (i) pay any dividend or make any other
distribution to holders of its capital stock, (ii) split, combine or reclassify
any of its capital stock or propose or authorize the issuance of any other
securities in respect of or in lieu of or in substitution for any shares of its


                                       35
<PAGE>

capital stock, or (iii) repurchase, redeem or otherwise acquire any shares of
its capital stock or (iv) take any preliminary action with respect thereto;

            (f) Target will not incur any additional indebtedness for borrowed
money (including, without limitation, by way of guarantee or the issuance and
sale of debt securities or rights to acquire debt securities), or incur any
account payable except in the ordinary course of business, or enter into or
modify any contract, agreement, commitment or arrangement with respect to the
foregoing;

            (g) Target will not enter into any transaction that would, in the
reasonable judgment of Acquirer, delay the occurrence of the Closing beyond
October 11, 1999;

            (h) Other than sales of products and services in the ordinary course
of business and consistent with present practice Target will not (i) sell, lease
or otherwise dispose of any of its assets having a book or market value in
excess of $50,000 in the aggregate or that are otherwise material, individually
or in the aggregate, to the business, results of operations or financial
condition of Target or (ii) enter into, or consent to the entering into of, any
agreement granting a preferential right to sell, lease or otherwise dispose of
any of such assets;

            (i) Target will not (i) enter into any new line of business; (ii)
change its investment, liability management and other material policies in any
material respect; (iii) incur or commit to any capital expenditures, obligations
or liabilities in connection therewith other than capital expenditures,
obligations or liabilities that (a) are listed on the Target Disclosure Schedule
or (b) individually do not exceed $50,000 and in the aggregate do not exceed
$150,000; (iv) acquire or agree to acquire by merging or consolidating with, or
acquire or agree to acquire by purchasing a substantial portion of the assets
of, or in any other manner, any business or Person; (v) otherwise, except as to
the acquisition of materials and supplies for its products, services and
activities in the ordinary course of business and consistent with past
practices, acquire or agree to acquire any assets for a total consideration in
the aggregate in excess of $50,000; (vi) make any investment in any Person; or
(vii) enter into any license, technology development or technology transfer
agreement with any other person or entity;

            (j) Target will not (i) change its methods of accounting as in
effect since inception except as required by changes in accounting principles
generally accepted in the United States concurred in by Ernst & Young LLP,
Target's independent auditors; (ii) change any of its methods of accounting for
income and deductions for income tax purposes from those employed in the
preparation of the income tax returns of Target for the period ending December
31, 1998; or (iii) change its fiscal year;

            (k) Target will not settle or compromise, or agree to settle or
compromise any suit or other litigation matter or matter in an arbitration
proceeding for any material amount (after taking into account any insurance
proceeds to which Target is entitled) or otherwise on terms which would have a
Material Adverse Effect on Target; and


                                       36
<PAGE>

            (l) Target will not agree or commit to do any of the foregoing.

      Section 6.02. Access to Records and Personnel. At all reasonable times
from and after the date hereof until the Closing, Target shall afford Acquirer
and its accountants, counsel, financial advisor and other representatives full
and complete access to the properties, employees and officers of Target and to
all books, accounts, financial and other records and contracts of every kind of
Target; provided, however, that no investigation pursuant to this Section 6.02
shall affect any representation or warranty given by Target or the Warranting
Shareholders to Acquirer hereunder.

      Section 6.03. No Other Offers. Target shall not, nor shall Target
authorize or permit any officer, director, employee or Shareholder of, any
investment banker, attorney, accountant or other representative retained by,
Target or the Shareholders to, (i) entertain, encourage, solicit or initiate any
inquiries or the making of any proposal that may reasonably be expected to lead
to any "takeover proposal" or (ii) participate in any discussions or
negotiations, or provide third parties with any information, relating to any
such inquiry or proposal. Target shall immediately advise Acquirer of any such
inquiries or proposals and shall provide Acquirer with the terms of such
proposal. As used in this Section 6.03, "takeover proposal" shall mean any
proposal outside of the ordinary course of Target's business, for a merger or
other business combination involving, directly or indirectly, Target or for the
acquisition of a substantial equity interest in Target, or a substantial portion
of the assets of Target other than the transactions contemplated hereby, and
"substantial equity interest" shall mean any equity ownership representing
beneficial ownership of five percent or more of the outstanding capital stock of
Target.

      Section 6.04. Maintenance of Business. Target will use its commercial best
efforts to carry on, preserve and maintain its business, preserve and retain its
employees, properties and goodwill, keep available the services of its officers
and employees and preserve its relationships with those of its customers,
suppliers, licensors, licensees and others having business relationships with it
that are material to its business in substantially the same manner as if it had
prior to the date hereof. If Target becomes aware of a material deterioration or
facts which are likely to result in a material deterioration in the relationship
with any material customer, supplier, licensor, licensee or others having
business relationships with Target, it will promptly bring such information to
the attention of Acquirer in writing.

      Section 6.05. Compliance with Obligations. Prior to the Closing Date,
Target will comply with (a) all applicable federal, state, local and foreign
laws, rules and regulations, (b) all material agreements and obligations,
including its Articles of Incorporation, by which Target, its properties or its
assets may be bound, and (c) all decrees, orders, writs, injunctions, judgments,
statutes, rules and regulations applicable to Target, its properties or its
assets.

      Section 6.06. Shareholder Approval. Target will use all reasonable efforts
to obtain the necessary approvals by its Shareholders of this Agreement and the
transactions contemplated hereby.


                                       37
<PAGE>

Each Shareholder listed on Schedule 6.06 has entered into a written consent,
substantially in the form of Exhibit 3.04 hereto.

      Section 6.07. Noncompetition and Confidentiality.

            (a) Noncompetition. Each of the Management Shareholders acknowledge
that he or she has extensive knowledge and a unique understanding of the
business of Target, has been directly involved with the establishment and
continued development of its customer relations and has had access to all of the
proprietary and confidential information used in the business of Target. Each of
the Management Shareholders further acknowledges that if he or she has, or any
of his or her Affiliates were, to compete with Acquirer or Target in such
business following the Closing, great harm would come to Acquirer thereby
destroying any value associated with the purchase of Target and the goodwill of
Target. In furtherance of the Merger and to more effectively protect the value
of Target, each of the Management Shareholders covenants and agrees that, for a
period beginning on the date hereof and ending on the date which is two years
thereafter (the "Term"), such Management Shareholder shall not, and shall cause
his or her Affiliates not to, directly or indirectly, as employee, agent,
consultant, stockholder, director, partner or in any other individual or
representative capacity, own, operate, manage, control, engage in, invest in, or
participate in, act as a consultant or advisor to, render services for (alone or
in association with any Person), or otherwise assist any Person that engages in
or owns, operates, manages or controls any venture or enterprise that engages or
proposes to engage in the business of selling market research and providing
customers with technically derived advertising monitoring and/or audience
measurement data (the "Field") anywhere in the world, except on behalf of Target
or Acquirer or their respective Affiliates. The parties agree that the following
are specifically excluded from the Field: Persons that use audience measurement
data to drive probing strategy for search engines or BOTs; predictive caching;
traditional advertising and corporate communication business. Persons that will
be presumed to be competitive for the purposes of this provision include but are
not limited to: AC Nielsen, Nielsen Media Research, NetRatings, CMR, LWA, VNU,
PC Data and NetValue. Notwithstanding the foregoing, nothing contained in this
Section 6.07 shall prohibit any Management Shareholder or his or her Affiliates
from owning not more than an aggregate of one percent (1%) of (i) any class of
stock of any company which is listed on a national securities exchange or traded
in the over-the-counter market or (ii) the economic interest of any venture
capital fund, provided that such Management Shareholder does not participate in
the management of such fund.

            (b) Nonsolicitation. Each Management Shareholder agrees that, during
the Term, none of said Management Shareholders or his or her respective
Affiliates will, directly or indirectly, as employee, agent, consultant,
principal or otherwise (i) solicit any business in the Field from or in any way
transact or seek to transact any business in the Field with a Restricted Entity
or otherwise seek to influence or alter the relationship between Target or its
Affiliates with a Restricted Entity or (ii) solicit for employment or other
services or otherwise seek to influence or alter the relationship between Target
or its Affiliates of any person who is or was an employee of Target or its
Affiliates at any time during the one year period preceding the Closing, except
on behalf of Target and Acquirer; provided that this clause 6.07(b) shall not
include solicitation of persons to serve on a


                                       38
<PAGE>

board of directors or board of advisors of a Person that does not do business in
the Field. Each of the Management Shareholders acknowledges that the covenants
contained in this Section 6.07 are essential conditions for Acquirer entering
into this Agreement without which Acquirer would not have entered into this
Agreement or have paid the consideration payable by it. The Management
Shareholders acknowledge that the restrictions set forth herein are reasonable,
valid and necessary for the protection of the legitimate interest of Acquirer
and Target. For the purposes of this clause 6.07 (b), "Restricted Entity" means
any person or entity to whom Target or its Affiliates provided services or to
whom Target or any of its Affiliates made a presentation with respect to the
provision of services by Target or any of its Affiliates at any time during the
one year period preceding the Closing.

            (c) Confidentiality. After the Closing, each Management Shareholder
shall strictly maintain the confidentiality of all information, documents and
materials relating to Target, except to the extent disclosure of any such
information is required by law or authorized by Acquirer. In the event that any
Shareholder reasonably believes after consultation with counsel that he, she or
it is required by law to disclose any confidential information described in this
Section 6.07(c), such Management Shareholder will (i) provide Acquirer with
prompt notice before such disclosure in order that Acquirer may attempt to
obtain a protective order or other assurance that confidential treatment will be
accorded to confidential information, and (ii) cooperate with Acquirer in
attempting to obtain such order or assurance. The provisions of this Section
6.07(c) shall not apply to any information, documents or materials which are in
the public domain or shall come into the public domain, other than by reason of
default by any Management Shareholder or his or her respective Affiliates, of
this Agreement or becomes known in the industry through no wrongful act on the
part of any Management Shareholder or their respective Affiliates.

            (d) Remedies. Without limiting the right of Acquirer to pursue all
other legal and equitable rights available to it, including without limitation,
damages for the actual or threatened violation of this Section 6.07 by any
Management Shareholder or any of his, her or its respective Affiliates, it is
agreed that other remedies cannot fully compensate Acquirer for such a violation
and that Acquirer shall be entitled to injunctive relief and/or specific
performance to prevent violation or continuing violation thereof, without bond
and without the necessity of showing actual monetary damages. It is the intent
and understanding of each party hereto that if, in any action before any court
or agency legally empowered to enforce this Section 6.07, any term, restriction,
covenant or promise in this Section 6.07 is found to be unreasonable and for
that reason unenforceable, then such term, restriction, covenant or promise
shall be deemed modified to the extent necessary to make it enforceable by such
court or agency.


                                       39
<PAGE>

                                  ARTICLE VII.

COVENANTS OF ACQUIRER

      Section 7.01. Commission Filings. Acquirer shall timely file all reports
required to be filed by it with the Commission required under the Securities Act
or Exchange Act between the date hereof and the Closing and shall deliver to
Target copies of all such reports promptly after the same are filed.

      Section 7.02. Filing of Registration Statement. Acquirer shall file a
registration statement on Form S-8 to register the shares of Acquirer Common
Stock to be issued upon the exercise of the Target Options within 15 days of the
Closing Date; provided that Acquirer shall not be required to file such
registration statement prior to November 8, 1999.

      Section 7.03. NASDAQ Listing. Acquirer will have the Acquirer Common Stock
issued in connection with the Merger and such other shares required to be
reserved for issuance in connection with the Merger authorized for listing on
the Nasdaq National Market, on or prior to the Closing Date, subject to official
notice of issuance.

      Section 7.04. Maintenance of Business. Acquirer will use its commercially
reasonable efforts to carry on, preserve and maintain its business, preserve and
retain its employees, properties and goodwill, keep available the services of
its officers and employees and preserve its relationships with those of its
customers, suppliers, licensors, licensees and others having business
relationships with it that are material to its business in substantially the
same manner as it has prior to the date hereof. If Acquirer becomes aware of a
material deterioration or facts which are likely to result in a material
deterioration in the relationship with any material customer, supplier,
licensor, licensee or others having business relationships with it which will
have a Material Adverse Effect on Acquirer, it will promptly bring such
information to the attention of Target in writing.

      Section 7.05. Compliance with Obligations. Prior to the Closing Date,
Acquirer will comply in all material respects with (i) all applicable Federal,
state, local and foreign laws, rules and regulations, (ii) all material
agreements and obligations, including its Certificate of Incorporation and
Bylaws, by which it, its properties or its assets may be bound, and (iii) all
decrees, orders, writs, injunctions, judgments, statutes, rules and regulations
applicable to it, its properties or its assets.

      Section 7.06. Tax Matters.

            (a) Acquirer will not, pursuant to a plan or intention in place at
the Effective Time, redeem and no person related to Acquirer (within the meaning
of Treasury Regulation Section 1.368-1(e)(3)) will, pursuant to a plan or
intention in place at the Effective Time, acquire any of the shares of Acquirer
Common Stock issued in the Merger. For purposes of this covenant, repurchases in
the ordinary course of business of unvested shares, if any, acquired from
terminating employees of Acquirer or Target will be disregarded.


                                       40
<PAGE>

            (b) Acquirer will use a significant portion of Target's historic
business assets in a business. For purposes of this covenant, Acquirer will be
deemed to satisfy this requirement if the members of Acquirer's qualified group
(as defined in Treasury Regulation Section 1.368-1(d)(4)), in the aggregate,
continue the historic business of Target or use a significant portion of
Target's historic business assets in a business, or the foregoing activities are
undertaken by a partnership as contemplated by Treasury Regulation Section
1.368-1(d)(4).

            (c) Following the Merger, Acquirer will comply with the
record-keeping and information requirements of Treasury Regulation Section
1.368-3.

            (d) In addition to the foregoing, each of Acquirer, Merger Sub and
Target shall use its commercially reasonable efforts to cause the Merger to
qualify, and will not (either before or after consummation of the Merger) take
any actions, or fail to take any action, that might reasonably be expected to
prevent the Merger from qualifying as a reorganization under the provisions of
Section 368 of the Code.

      Section 7.07. Employee Benefits of Target Employees. Acquirer shall offer
to the employees of Target employment by Acquirer after the Effective Time, and
each such offer shall (i) include a compensation package in accordance with
Acquirer's compensation policy, (ii) to the extent permitted by Acquirer's
employee benefit programs, enable such eligible employee to participate in
Acquirer's employee benefit programs and other individual benefits as outlined
in each employee's individual offer, such as life insurance, health, medical,
dental and vision coverage and Acquirer's 401(k) plan ("Acquirer Plans"), and
(iii) be in the form of any individual offer letter prepared in accordance with
Acquirer's customary form. Acquirer agrees that for purposes of all Acquirer
Plans (including all policies and employee fringe benefit programs) under which
an employee's benefit depends in whole or in part on length of service, credit
will be given to such employee for service previously credited with the Target
prior to the Effective Time; provided, that such crediting of services does not
result in duplication of benefits. Such persons, if they accept such employment,
shall be "at will" employees and may be terminated by Acquirer at any time for
any reason or for no reason. Acquirer has set aside options for 150,000 shares
of Acquirer Common Stock, and shall grant to each of the individuals set forth
on Exhibit 7.07 hereto who are employees of Acquirer options to purchase that
number of shares of Acquirer Common Stock set forth opposite such individual's
name on Exhibit 7.07 at a purchase price per share equal to the closing price of
Acquirer Common Stock on the date of grant as reported on the National Nasdaq
Market pursuant to Acquirer's stock incentive plan. Such options will be granted
to such employees within 60 days after the Effective Date as equity compensation
pursuant to Acquirer's compensation policies. In addition, as soon as is
practicable after the Closing, Acquirer undertakes to take such steps as may be
necessary to make available to the employees of Target such employee benefits as
are comparable to those offered by Acquirer to its employees of similar position
and responsibilities, with each such employee of Target receiving credit for
service with Target prior to the Effective Date for purposes of each plan.


                                       41
<PAGE>

      Section 7.08. Consents. Acquirer shall promptly apply for or otherwise
seek, and use its commercially reasonable efforts to obtain all consents and
approvals required to be obtained by it for the consummation of the Merger.

      Section 7.09. Maintenance of Target Indemnification Obligations.

            (a) Subject to and following the Effective Time, Target shall, and
Acquirer shall cause Target to, indemnify and hold harmless the Indemnified
Target Parties (as defined below) to the extent provided in the Bylaws or
Articles of Incorporation of Target or pursuant to indemnification agreements
between the Target and the Indemnified Target Parties, in each case as in effect
as of the date of this Agreement without amendment, for three years after the
Effective Time; provided, however, that all rights to indemnification in respect
of any claim asserted or made within such period shall continue until the final
disposition of such claim. Target shall, and Acquirer shall cause Target to,
keep in effect such provisions and agreements, which shall not be amended except
as required by applicable law or to make changes permitted by Washington Law
that would enlarge the rights to indemnification available to the Indemnified
Target Parties and changes to provide for exculpation of director and officer
liability to the fullest extent permitted by Washington Law. For purposes of
this Section 7.09, "Indemnified Target Parties" shall mean the individuals who
were officers, directors and employees of Target on or prior to the Effective
Time.

            (b) The provisions of this Section 7.09 shall be in addition to any
other rights available to the Indemnified Target Parties, shall survive the
Effective Time of the Merger, and are expressly intended for the benefit of the
Indemnified Target Parties.

                                  ARTICLE VIII.
                        COVENANTS OF TARGET AND ACQUIRER

      Section 8.01. Advice of Changes. Each party will promptly advise the other
such party in writing of:

            (a) any notice or other communication from any Person alleging that
the consent of such Person is or may be required in connection with the Merger;

            (b) any notice or other communication from any Governmental Entity
or Regulatory Authority in connection with the Merger;

            (c) any actions, suits, claims, investigation or other judicial
proceedings commenced or threatened against it which, if pending on the date of
this Agreement, would have been required to have been disclosed pursuant to this
Agreement or which relate to the consummation of the Merger;

            (d) any event known to its executive officers occurring subsequent
to the date of this Agreement that would render any representation or warranty
of such party contained in this


                                       42
<PAGE>

Agreement, if made on or as of the date of such event or the Closing Date,
untrue, inaccurate or misleading in any material respect (other than an event so
affecting a representation or warranty which is expressly limited to a state of
facts existing at a time prior to the occurrence of such event);

            (e) any Material Adverse Change in the business condition of the
party; and

            (f) from time to time prior to the Closing, Target and Acquirer will
promptly supplement or amend its respective Disclosure Schedule with respect to
any matter hereafter arising which, if existing or occurring at the date of this
Agreement, would have been required to be set forth or described in such
Disclosure Schedule hereto. No supplement or amendment of a Disclosure Schedule
made pursuant to this Section shall be deemed to cure any breach of, affect or
otherwise diminish any representation or warranty made in this Agreement unless
the other party hereto specifically agrees thereto in writing.

      Section 8.02. Regulatory Approvals. Prior to the Closing, each party shall
execute and file, or join in the execution and filing of, any application or
other document that may be necessary in order to obtain the authorization,
approval or consent of any Governmental Entity or Regulatory Authority which may
be reasonably required, or that the other party may reasonably request, in
connection with the consummation of the Merger. Each party shall use its
commercially reasonable efforts to obtain all such authorizations, approvals and
consents.

      Section 8.03. Actions Contrary to Stated Intent. Neither party shall take
any action that would, or reasonably might be expected to, result in any of its
representations and warranties set forth herein being or becoming untrue in any
material respect, or in any of the conditions to the Acquisition set forth in
Article IX hereof not being satisfied.

      Section 8.04. Certain Filings. Target and Acquirer shall cooperate with
one another:

            (a) in determining whether any action by or in respect of, or filing
with, any Governmental Entity or Regulatory Authority is required, or any
actions, consents, approvals or waivers are required to be obtained from parties
to any material contracts, in connection with the consummation of the
transactions contemplated by this Agreement; and

            (b) in seeking any such actions, consents, approvals or waivers or
making any such filings, furnishing information required in connection therewith
and seeking timely to obtain any such actions, consents, approvals or waivers.

      Section 8.05. Satisfaction of Conditions Precedent. Target and Acquirer
will use their commercially reasonable efforts to satisfy or cause to be
satisfied all the conditions precedent that are set forth in Article VIII
hereof, as applicable to each of them, and to cause the transactions
contemplated by this Agreement to be consummated by October 11, 1999 and,
without limiting the generality of the foregoing, to obtain all consents and
authorizations of third parties and to make all filings with, and give all
notices to, third parties that may be necessary or reasonably required on its


                                       43
<PAGE>

part in order to effect the transactions contemplated hereby. Target and
Acquirer agree to negotiate in good faith with respect to any additional
agreement reasonably requested by another party hereto which such requesting
party determines in good faith is necessary to effect the transactions
contemplated hereby.

      Section 8.06. Public Disclosure. Acquirer and Target shall consult with
each other before issuing any press release or otherwise making any public
statement with respect to the Merger or this Agreement and shall not issue any
such press release or make any such public statement prior to such consultation,
except as, in the reasonable judgment of the Board of Directors of either
Acquirer or Target, may be required by law or the rules and regulations of
Nasdaq.

      Section 8.07. Representative of the Shareholders; Power of Attorney. Upon
approval of the Merger by the Shareholders, effective upon such vote, and
without further act of any Shareholder, Will Hodgman, or such other person as is
appointed by a majority in interest of the Shareholders, shall be appointed as
agent and attorney-in-fact (the "Stockholders' Representative") for each
shareholder of Target (except such shareholders, if any, as shall have perfected
their dissenters' rights under Washington Law), for and on behalf of the
Shareholders, to give and receive notices and communications on behalf of the
Shareholders, to enter into and perform the Escrow Agreement, to authorize
delivery to Acquirer of the Escrow Shares in satisfaction of indemnifiable
claims by Acquirer or any other Indemnified Person under Article XI, to object
to such deliveries, to agree to, negotiate, enter into settlements and
compromises of, and demand arbitration and comply with orders of courts and
awards of arbitrators with respect to such claims, and to take all actions
necessary or appropriate in the judgment of the Stockholders' Representative for
the accomplishment of the foregoing.

                                   ARTICLE IX.
                              CONDITIONS OF CLOSING

      Section 9.01. Conditions to All Parties' Obligations. The obligations of
all the parties to this Agreement to effect the Acquisition shall be subject to
the fulfillment or satisfaction, at or prior to the execution of this Agreement
of the following conditions or the mutual waiver by the parties:

            (a) Illegality or Legal Constraint. No temporary restraining order,
preliminary or permanent injunction or other order or restraint issued by any
court of competent jurisdiction, no statute, rule, regulation, order, decree,
restraint or pronouncement by any Governmental Entity, and no other legal
restraint or prohibition which would prevent or have the effect of preventing
the consummation of the Acquisition shall have been issued or adopted or be in
effect.

            (b) Governmental Authorizations. All permits, approvals, filings and
consents required or advisable to be obtained or made prior to the consummation
of the Acquisition under applicable federal laws or applicable laws of any state
or municipality or foreign country having jurisdiction over the Acquisition and
the other transactions contemplated herein shall have been


                                       44
<PAGE>

obtained or made, as the case may be, on terms and conditions satisfactory to
Target, the Management Shareholders, Acquirer and Acquirer Sub, acting
reasonably, (all such permits, approvals, filings and consents and the lapse of
all such waiting periods being referred to as the "Requisite Regulatory
Approvals"), and all such Requisite Regulatory Approvals shall be in full force
and effect.

            (c) Escrow Agreement. Acquirer, the Shareholders and the Escrow
Agent shall have executed the Escrow Agreement in the form of Exhibit 2.07
hereof.

            (d) Registration Rights Agreement. Acquirer and the Shareholders
shall have executed and delivered the Registration Rights Agreement in the form
of Exhibit 9.01(d) hereto.

      Section 9.02. Conditions to the Obligations of Acquirer and Acquirer Sub
to Effect the Acquisition. The obligations of Acquirer and Acquirer Sub under
this Agreement to effect the Acquisition are subject to the fulfillment or
satisfaction, at or prior to the execution of this Agreement, of the following
conditions, unless waived by Acquirer in its sole discretion:

            (a) Accuracy of Representations and Warranties. Each of the
representations and warranties of Target and the Warranting Shareholders set
forth in Articles III and IV hereof that is expressly qualified by a reference
to materiality shall be true and correct in all respects as so qualified, and
each of the representations and warranties of Target and the Warranting
Shareholders set forth in Articles III and IV hereof that is not so qualified
shall be true and correct in all material respects, each as of the date when
made and at and as of the Closing, except for such changes as are permitted by
this Agreement and except to the extent a representation or warranty speaks only
as of an earlier date.

            (b) Covenants and Agreements. Target and the Management Shareholders
shall have duly performed and complied with the covenants and agreements
required by this Agreement to be performed by or complied with by it, him or her
prior to or at the Closing. None of the events or conditions entitling Acquirer
to terminate this Agreement under Article X hereof shall have occurred and be
continuing.

            (c) Consents. Any consent required for the consummation of the
Acquisition under any material Contract or License or for the continued
enjoyment by Target of the benefits of any such contract or license after the
Acquisition shall have been obtained.

            (d) Opinion of Counsel. Acquirer shall have received the opinion of
Venture Law Group, counsel to Target, dated as of the Closing Date, in the form
of Exhibit 9.02(d) hereto.

            (e) Certificate of Target. Acquirer shall have received a
certificate of Target, executed on behalf of Target by the Chief Executive
Officer and Chief Financial Officer of Target, satisfactory in form and
substance to Acquirer, as to compliance with the matters set forth in paragraphs
(a), (b) and (c) of this Section 9.02.


                                       45
<PAGE>

            (f) No Adverse Decision. There shall not be any action taken or
threatened, or any statute, rule, regulation or order enacted, entered,
threatened, or deemed applicable to the transactions contemplated hereby, by any
foreign or United States Federal or state government or Governmental Entity or
Regulatory Authority or court that, whether in connection with the grant of a
Requisite Regulatory Approval, any agreement proposed by any foreign or United
States Federal or state government or Governmental Entity or Regulatory
Authority, or otherwise, which (i) requires or could reasonably be expected to
require any divestiture of a portion of its business that Acquirer in its
reasonable judgment believes will have a Material Adverse Effect on Target or
(ii) imposes any condition upon Target that in Acquirer's reasonable judgment
(x) would be materially burdensome to Target or (y) would materially increase
the costs incurred or that will be incurred by Acquirer as a result of
consummating the Acquisition and the other transactions contemplated hereby.
There shall be no action, suit, investigation or proceeding pending or
threatened by or before any Governmental Entity which (i) seeks to restrain,
enjoin, prevent the consummation of or otherwise materially affect the
transactions contemplated by this Agreement or (ii) questions the validity or
legality of any such transactions or seeks to recover damages or to obtain other
relief in connection with any such transactions.

            (g) Litigation. There shall not have been any litigation or claim
pending or threatened against Target as of Closing Date that could reasonably be
expected to have a Material Adverse Effect on Target.

            (h) Proceedings; Receipt of Documents. All corporate and other
proceedings taken or required to be taken in connection with the transactions
contemplated hereby and all documents incident thereto shall be reasonably
satisfactory in form and substance to Acquirer and Acquirer's counsel, and
Acquirer and Acquirer's counsel shall have received all such information and
such counterpart originals or certified or other copies of such documents as
Acquirer or its counsel may reasonably request. Acquirer shall have received
such other instruments, approvals and other documents as it may reasonably
request to make effective the transactions contemplated hereby.

            (i) Adverse Change. From the date hereof through and including the
Closing Date, Target shall not have suffered any Material Adverse Change in its
business, financial condition, assets, properties or prospects (whether or not
such change is described in any supplement to a schedule hereto).

            (j) Non-Disclosure and Non-Solicitation Agreements. Each of the
employees of Target who are to be employed or otherwise retained by Acquirer
shall have entered into an agreement with Acquirer, in the form of Exhibit
9.02(j) hereto.

            (k) Financial Statements. Acquirer shall have received from Target
true, correct and complete copies of each of the financial statements referenced
in Section 3.07 hereto. Target


                                       46
<PAGE>

agrees to assist Acquirer and Acquirer's independent auditors with preparation
of unaudited financial statements for any periods requested by Acquirer.

            (l) Shareholder Representation Letters. Each Shareholder shall have
delivered to Acquirer a letter in the form of Exhibit 9.02(l)(i) relating to
such Shareholder's status as an "accredited investor" for purposes of the
Securities Act. If any Shareholder is not an "accredited investor", such
Shareholder shall appoint Linden Rhoads as his shareholder representative for
the purpose of complying with the provisions of Regulation D promulgated under
the Securities Act. Such appointment shall be made pursuant to a letter in the
form of Exhibit 9.02(l)(ii).

            (m) FIRPTA Affidavit. Target shall have executed and delivered to
Acquirer an affidavit pursuant to Section 1445(b) of the Code in the form
attached hereto as Exhibit 9.02(m).

            (n) Supporting Documents. Acquirer and its counsel shall have
received copies of the following documents:

                  (i) (A) the Articles of Incorporation of Target certified as
            of a recent date by the Secretary of State of the State of
            Washington, (B) a certificate of said Secretary dated as of a recent
            date as to the due incorporation of Target and (C) a certificate
            from the Secretary of State of each state or jurisdiction listed on
            the Target Disclosure Schedule, as to Target's qualification, good
            standing (if applicable) and payment of taxes in each such state;

                  (ii) a certificate of the Secretary or an Assistant Secretary
            (or other officer or director executing such certificate) of Target
            dated the Closing Date and certifying (A) that attached thereto is a
            true and complete copy of the Bylaws of such company as in effect on
            the date of such certification; (B) that attached thereto is a true
            and complete copy of all resolutions adopted by the Board of
            Directors and the shareholders of such company authorizing the
            execution, delivery and performance of this Agreement and the other
            agreements contemplated hereby to which such company is a party, and
            the consummation of the Agreement and the other agreements
            contemplated hereby to which such company is a party, and that all
            such resolutions are in full force and effect and are all the
            resolutions adopted in connection with the transactions contemplated
            hereby, and (C) to the incumbency and specimen signature of each
            officer or director of such company executing this Agreement and any
            certificate or instrument furnished pursuant hereto, and a
            certification by another officer or director of such company as to
            the incumbency and signature of the officer or director signing the
            certificate referred to in this clause (ii); and

                  (iii) such additional similar supporting documents and other
            information with respect to the operations and affairs of Target as
            Acquirer or its counsel may reasonably request.


                                       47
<PAGE>

            (o) Lock-up Agreements. Each of William Hodgman, Jay Bartot, Craig
Horman, Linden Rhoads and Dan Weld shall have executed a lock-up agreement
regarding their shares of Acquirer Common Stock received as Merger
Consideration, substantially in the form of Exhibit 9.02(o).

            (p) Dissenting Shares. Holders of not more than 1% of the Target's
Capital Stock shall have perfected dissenters' rights in accordance with
Washington Law.

            All such documents shall be reasonably satisfactory in form and
substance to Acquirer and its counsel.

      Section 9.03. Conditions to the Obligations of Target and the Shareholders
to Effect the Merger. The obligations of Target and the Management Shareholders
under this Agreement to effect the Merger are subject to the fulfillment or
satisfaction, at or prior to the execution of this Agreement of the following
conditions, unless waived by Target and the Management Shareholders in their
sole discretion:

            (a) Accuracy of Representations and Warranties. The representations
and warranties of Acquirer and Acquirer Sub set forth in Article V hereof that
is expressly qualified by a reference to materiality shall be true and correct
in all respects as so qualified, and each of the representations and warranties
of Acquirer and Acquirer Sub set forth in Article V hereof that is not so
qualified shall be true and correct in all material respects as of the date when
made and at and as of the Closing (except to the extent a representation or
warranty speaks only as of an earlier date and except for changes contemplated
by this Agreement).

            (b) Covenants and Agreements. Acquirer and Acquirer Sub shall have
complied with the covenants and agreements required by this Agreement to be
performed or complied with by it prior to or at the Closing. None of the events
or conditions entitling Target and the Management Shareholders to terminate this
Agreement under Article X hereof shall have occurred and be continuing.

            (c) Opinion of Counsel. Target and the Management Shareholders shall
have received the opinion of Fulbright & Jaworski L.L.P., counsel to Acquirer
and Acquirer Sub, in the form of Exhibit 9.03(c) hereto.

            (d) Tax Opinion. Target shall have received from Venture Law Group,
A Professional Corporation, counsel to Target, an opinion, in form and substance
reasonably satisfactory to it, to the effect that the Acquisition will
constitute a reorganization within the meaning of Section 368 of the Code.
Acquirer, Target and Acquirer Sub agree to make customary representations to
permit counsel to render such opinion.

            (e) Certificate of Acquirer and Acquirer Sub. Target shall have
received certificates of Acquirer and Acquirer Sub, each satisfactory in form
and substance to Target,


                                       48
<PAGE>

executed on behalf of Acquirer or Acquirer Sub, as appropriate, by the Chief
Executive Officer and Chief Financial Officer of Acquirer or Acquirer Sub, as
appropriate, as to compliance with the matters set forth in paragraphs (a) and
(b) of this Section 9.03.

            (f) Proceedings; Receipt of Documents. All corporate and other
proceedings taken or required to be taken in connection with the transactions
contemplated hereby and all documents incident thereto shall be reasonably
satisfactory in form and substance to Target and the Management Shareholders and
counsel to Target and the Management Shareholders, and Target, the Management
Shareholders and counsel to Target and the Management Shareholders shall have
received all such information and such counterpart originals or certified or
other copies of such documents as Target, the Shareholders or their counsel may
reasonably request. Target and the Management Shareholders shall have received
such other instruments, approvals and other documents as it may reasonably
request to make effective the transactions contemplated hereby.

            (g) Supporting Documents. Target and its counsel shall have received
copies of the following documents:

                  (i) (A) the Certificate of Incorporation of Acquirer certified
            as of a recent date by the Secretary of State of the State of
            Delaware, (B) a certificate of said Secretary dated as of a recent
            date as to the corporate and tax good standing of Acquirer, (C) the
            Articles of Incorporation of Acquirer Sub certified as of a recent
            date by the Secretary of State of the State of Washington, and (D) a
            certificate of said Secretary dated as of a recent date as to the
            corporate and tax good standing of Acquirer Sub;

                  (ii) certificates of the Secretary or an Assistant Secretary
            (or other officer or director executing such certificate) of
            Acquirer and Acquirer Sub dated the Closing Date and certifying (A)
            that attached thereto is a true and complete copy of the Bylaws of
            such company as in effect on the date of such certification; (B)
            that attached thereto is a true and complete copy of all resolutions
            adopted by the Board of Directors and the shareholders (if any) of
            such company authorizing the execution, delivery and performance of
            this Agreement and the other agreements contemplated hereby to which
            such company is a party, and the consummation of the Agreement and
            the other agreements contemplated hereby to which such company is a
            party, and that all such resolutions are in full force and effect
            and are all the resolutions adopted in connection with the
            transactions contemplated hereby, and (C) to the incumbency and
            specimen signature of each officer or director of such company
            executing this Agreement and any certificate or instrument furnished
            pursuant hereto, and a certification by another officer or director
            of such company as to the incumbency and signature of the officer or
            director signing the certificate referred to in this clause (ii);
            and


                                       49
<PAGE>

                  (iii) such additional similar supporting documents and other
            information with respect to the operations and affairs of Acquirer
            and Acquirer Sub as Target or its counsel may reasonably request.

            (h) Adverse Change. From the date hereof through the Closing Date,
Acquirer shall not have suffered any Material Adverse Change in its business,
financial condition, assets, properties or prospects.

                                   ARTICLE X.
                       TERMINATION, AMENDMENTS AND WAIVERS

      Section 10.01. Termination. This Agreement may be terminated at any time
prior to the Closing:

            (a) by the mutual consent of the Boards of Directors of Acquirer,
Acquirer Sub, and Target;

            (b) by Acquirer and Acquirer Sub, or Target, if the Closing shall
not have occurred on or before the close of business on October 31, 1999
provided that the terminating party is not at fault for the delay;

            (c) by Acquirer and Acquirer Sub, if they are not in material breach
of their obligations under this Agreement, and if (i) there has been a breach by
Target or the Shareholders of any of their respective representations and
warranties hereunder such that Section 9.02(a) will not be satisfied, (ii) there
has been a willful breach on the part of Target or the Shareholders of any of
their respective covenants or agreements contained in this Agreement such that
the first sentence of Section 9.02(b) will not be satisfied, and, in both case
(i) and case (ii), such breach has not been cured within ten (10) days after
notice to Target or the Shareholders;

            (d) by Acquirer and Acquirer Sub, if the average of the daily
closing prices of Acquirer Common Stock for the five consecutive trading days
ending on the second trading day immediately preceding the Closing Date is less
than $20;

            (e) by Target and the Shareholders (acting by a majority in
interest), if they are not in material breach of their obligations under this
Agreement, and if (i) there has been a breach by Acquirer or Acquirer Sub of any
of their representations and warranties hereunder such that Section 9.03(a) will
not be satisfied or (ii) there has been the willful breach on the part of
Acquirer or Acquirer Sub of any of their covenants or agreements contained in
this Agreement such that the first sentence of Section 9.03(b) will not be
satisfied, and, in both case (i) and (ii), such breach has not been cured within
ten (10) days after notice to Acquirer;


                                       50
<PAGE>

            (f) by Target and the Shareholders (acting by a majority in
interest), if the average of the daily closing prices of Acquirer Common Stock
for the five consecutive trading days ending on the second trading day
immediately preceding the Closing Date is greater than $100;

            (g) by Acquirer, if, after the date of this Agreement, there shall
have occurred a Material Adverse Change in the business of Target, or its
financial condition, assets, properties and prospects.

      Section 10.02. Effect of Termination. In the event of termination of this
Agreement by either Target and the Shareholders or Acquirer and Acquirer Sub as
provided in Section 10.01 hereof, this Agreement shall, except as provided
herein, forthwith become void and there shall not be any liability or obligation
with respect to the terminated provisions of this Agreement on the part of the
parties hereto or their respective officers or directors, except and to the
extent such termination results from the willful breach by a party of any of its
representations, warranties or agreements hereunder. Notwithstanding the
foregoing, if the Agreement is terminated as a result of the failure on the part
of (i) Target or the Shareholders to satisfy any of its or their respective
conditions to closing set forth in Section 9.02(a) hereto or (ii) Acquirer or
Acquirer Sub to satisfy any of its or their respective conditions to closing set
forth in Section 9.03(a) hereto, then the party which failed to satisfy such
conditions to closing will reimburse the other party for all such party's
expenses incurred in connection with the Acquisition and the transactions
contemplated hereby.

                                   ARTICLE XI.
                                 INDEMNIFICATION

      Section 11.01. Indemnification by the Shareholders.

            (a) Indemnification. Subject to the provisions of Section 11.03
hereof, the Shareholders (whether or not a Shareholder is a party to this
Agreement) shall indemnify, defend and hold harmless Acquirer and its officers,
directors, employees, agents and representatives (each an "Acquirer Indemnified
Party") from and against and in respect of any and all losses, damages,
expenses, liabilities, claims, settlements, assessments and judgments (including
reasonable costs and attorney's fees and other expenses arising out of claim, or
the defense, settlement or investigation thereof, made with respect to any of
the foregoing) (collectively, "Losses") incurred or suffered by an Acquirer
Indemnified Party, arising out of, based upon or resulting from any inaccuracy,
misrepresentation or breach of representation and warranty contained in Article
III of this Agreement or non-fulfillment of any covenant or agreement of Target
contained in this Agreement or any certificate or instrument furnished pursuant
hereto. Notwithstanding anything contained in this Article XI, the maximum
indemnification liability of any Shareholder with respect to any Loss shall not
exceed such Shareholder's pro rata share of such Loss based on such
Shareholder's ownership of outstanding Target Capital Stock on the Closing Date;
provided, that Will Hodgman and Linden Rhodes shall be liable for Losses being
satisfied with Escrow Shares in excess of their respective pro rata shares to
the full extent of their Escrow Shares, allocated between them ratably.


                                       51
<PAGE>

            (b) Several Indemnification. Subject to the provisions of Section
11.03 hereof, each Shareholder shall severally but not jointly indemnify, defend
and hold harmless each Acquirer Indemnified Party from and against and in
respect of any and all losses, damages, expenses, liabilities, claims,
settlements, assessments and judgments (including reasonable costs and
attorney's fees and other expenses arising out of any claim, or the defense,
settlement or investigation thereof, made with respect to any of the foregoing)
incurred or suffered by Acquirer, arising out of, based upon or resulting from
any inaccuracy, misrepresentation or breach by such Shareholder of any of
his/her/its representations and warranties contained in Article IV of this
Agreement, or any non-fulfillment of any of his/her/its respective covenants or
agreements or any certificate or instrument furnished pursuant hereto.

      Section 11.02. Indemnification by Acquirer. Subject to the provisions of
Section 11.03 hereof, Acquirer shall indemnify, defend and hold harmless Target,
its officers, directors, employees, agents and representatives and each of the
Shareholders (each a "Target Indemnified Party") from and against and in respect
of any and all losses, damages, expenses, liabilities, claims, settlements,
assessments and judgments (including the reasonable costs and attorney's fees
and other expenses arising out of any claim, or the defense, settlement or
investigation thereof, made with respect to any of the foregoing) incurred or
suffered by any Target Indemnified Party, arising out of, based upon or
resulting from any inaccuracy, misrepresentation or breach by Acquirer or
Acquirer Sub of the representations or warranties contained in Article V of this
Agreement, or any non-fulfillment of any of their respective covenants or
agreements contained in this Agreement or any certificate or instrument
furnished pursuant hereto.

      Section 11.03. Limitations.

            (a) An Indemnifying Party (as defined in Section 11.05 below) shall
not be entitled to make any claim for indemnification under this Article XI with
respect to the inaccuracy, misrepresentation or breach of any representation and
warranty contained in this Agreement after the date on which such representation
or warranty ceases to survive pursuant to Section 11.06 hereof.

            (b) Notwithstanding anything to the contrary contained herein, no
Indemnified Party (as defined in Section 11.04 below) shall be entitled to
indemnification from an Indemnifying Party (as defined in Section 11.04 below)
with respect to the inaccuracy, misrepresentation or breach or any
representation and warranty until the losses suffered by such Indemnified Party
and for which indemnification is available hereunder exceed $25,000 per claim or
$100,000 in the aggregate, whereupon the Indemnified Party shall be entitled to
claim indemnification for all losses suffered (including the initial $25,000 or
$100,000, as the case may be) by such Indemnified Party and for which
indemnification is available hereunder; provided, however, that this $25,000 or
$100,000, as the case may be, threshold shall not be applicable with respect to
the representations and warranties contained in Sections 3.03, 3.11, 3.22,
3.24(b) and 4.01.


                                       52
<PAGE>

            (c) Except as set forth below, the total indemnification liability
of all Shareholders shall not exceed, in the aggregate, the value of the
Escrowed Shares, provided that with respect to any breach of the representations
and warranties set forth in Sections 3.01, 3.03, 3.04, 3.08, 3.09, 3.11, 3.19,
3.22 and 3.24, such limitation on indemnification liability shall not apply, and
instead the total indemnification liability of each Shareholder shall not
exceed, in the aggregate, the value of the Merger Consideration and the issued
Contingent Shares delivered to such Shareholder hereunder. The total
indemnification liability of Acquirer shall not exceed the value of the Merger
Consideration on the Closing Date. For purposes of satisfying any indemnity
claim payable out of the Escrowed Shares, the Escrowed Shares shall be valued at
the Average Acquirer Price. No limitation provided in this Section 11.03,
however, shall be applicable with respect to any claim for fraud, willful
misconduct or intentional misrepresentation.

      Section 11.04. Notice and Defense of Claims.

            (a) Each Acquirer Indemnified Party and Target Indemnified Party
(the "Indemnified Party") shall give notice to the party or parties required to
provide indemnification (the "Indemnifying Party") promptly after such
Indemnified Party has actual knowledge of any claim as to which indemnity may be
sought, and, in the event of any claim or demand asserted by a third party; but
the failure of any Indemnified Party to timely give notice as provided herein
shall not relieve the Indemnifying Party of its obligations under this Agreement
unless such failure to give notice materially adversely affected the ability of
the Indemnifying Party to defend such claim. Upon receipt of any such notice,
the Indemnifying Party may elect to defend the Indemnified Party against such
claim, suit, action or proceeding, at its own expense, through counsel of its
own choice that is reasonably acceptable to the Indemnified Party, and from and
after such election and for so long as the Indemnifying Party is diligently
prosecuting such defense, the Indemnifying Party shall not be responsible for
any legal fees or expenses of the Indemnified Party, other than reasonable costs
of investigation. Failing such election or reasonably diligent prosecution, the
Indemnified Party shall have the right to (but shall not be obligated to) pay,
compromise or defend the same. In any claim, suit, action or proceeding defended
by the Indemnifying Party, the Indemnified Party may participate, at its
expense, in the defense of the same. The Indemnifying Party in the defense of
any such claim, suit, action or proceeding shall not, except with the consent of
the Indemnified Party, consent to the entry of any judgment or entry into any
settlement which (i) does not include as an unconditional term thereof the
giving by the claimant or plaintiff to the Indemnified Party of a release from
all liability in respect to such claim, suit, action or proceeding or (ii)
requires the performance of any act (other than the payment of moneys for which
such Indemnified Party is held harmless hereunder) or the agreement not to
perform any act by the Indemnified Party. The Indemnified Party shall not settle
or compromise any such claim without the prior written consent of the
Indemnifying Party, which consent shall not be unreasonably withheld. The
Indemnified Party shall furnish such information regarding itself or the claim
in question as the Indemnifying Party may reasonably request in writing and as
shall be reasonably required in connection with defense of such claim, suit,
action or proceeding resulting therefrom.


                                       53
<PAGE>

      Section 11.05. Exclusive Remedy. In the absence of fraud, willful
misconduct or intentional misrepresentation (for which liability shall be
governed by applicable law), the indemnification provisions of this Article XI
and under the Escrow Agreement will be the sole and exclusive remedy of Acquirer
and the other Indemnified Parties after the Closing Date for any damages
suffered by the Indemnified Parties in connection with this transaction. In
order to secure the performance by the Shareholders of their respective
obligations hereunder, the Shareholder Representative will enter into the Escrow
Agreement for and on behalf of the Shareholders.

      Section 11.06. Survival of Representations and Warranties. All of the
representations, warranties and agreements contained in this Agreement shall
survive the Closing and shall remain in full force and effect until the
expiration of one year from the Closing Date and, thereafter, to the extent a
claim is made prior to such expiration with respect to any breach of such
representation, warranty or agreement, until such claim is finally determined or
settled. Notwithstanding the foregoing, the representations and warranties
contained in Sections 3.01, 3.03, 3.04, 3.11, 3.17, 3.24(b) and 3.24 (c) shall
remain in full force and effect until the expiration of the applicable statute
of limitations.

      Section 11.07. Reimbursement. Subject to Section 11.02 hereof, at the time
that the Indemnified Party shall suffer a loss because of a breach of any
warranty, representation or covenant by the Indemnifying Party or at the time
the amount of any liability on the part of the Indemnifying Party under this
Agreement is determined (which in the case of payment to third persons shall be
the earlier of (i) the date of such payment, provided that the Indemnified Party
has fully complied with Section 11.03, or (ii) the date that a court of
competent jurisdiction shall enter a final judgment, order or decree (after
exhaustion or expiration of appeal rights) establishing such liability) (such
loss or amount being hereinafter referred to as the "Indemnity Claim"), the
Indemnifying Party shall forthwith, upon notice from the Indemnified Party, pay
to the Indemnified Party the amount of the Indemnity Claim. In the case of an
Indemnity Claim against a Target Indemnified Party, such claim shall first be
satisfied out of the Escrowed Shares and, in the event that the Escrowed Shares
are exhausted, shall then be payable, at the option of the Indemnifying Party,
either in cash or shares of Acquirer Common Stock. For purposes of satisfying
any indemnity claim in shares of Acquirer Common Stock pursuant to this Section
11.07, such shares shall be valued at the Average Acquirer Price. In the case of
an Indemnity Claim against an Acquirer Indemnified Party, such claim shall be
paid in cash. If such amount is not paid forthwith, then the Indemnified Party
may, at its option, take legal action against the Indemnifying Party for
reimbursement in the amount of its Indemnity Claim. For purposes hereof the
Indemnity Claim shall include the amounts so paid, or determined to be owing by
the Indemnified Party together with costs and reasonable attorney's fees and
interest on the foregoing items (but only to the extent pre-judgment interest
due the Indemnified Party is not already included within such items) at the rate
of ten percent (10%) per annum from the date the Indemnity Claim is due from the
Indemnifying Party to the Indemnified Party as hereinabove provided until the
Indemnity Claim shall be paid.


                                       54
<PAGE>

                                  ARTICLE XII.
                               GENERAL PROVISIONS

      Section 12.01. Taking of Necessary Action. In case at any time after the
Closing any further action is necessary or desirable to carry out the purposes
of this Agreement, each of the parties hereto agrees, subject to applicable
laws, to use all reasonable efforts promptly to take or cause to be taken all
further action and promptly to do or cause to be done all further things
(including the execution and delivery of such further instruments and documents)
as any party reasonably may request.

      Section 12.02. Effect of Due Diligence. No investigation by or on behalf
of Acquirer or Acquirer Sub into the business, operations, prospects, assets or
condition (financial or otherwise) of Target shall diminish in any way the
effect of any representations or warranties made by Target or any of the
Shareholders in this Agreement or shall relieve Target or any of the
Shareholders of any of their obligations under this Agreement. No investigation
by or on behalf of Target or the Shareholders into the business, operations,
prospects, assets or condition (financial or otherwise) of Acquirer or Acquirer
Sub shall diminish in any way the effect of any representations or warranties
made by Acquirer or Acquirer Sub in this Agreement or shall relieve Acquirer or
Acquirer Sub of any of their obligations under this Agreement.

      Section 12.03. Expenses. Except as provided in Article X, all costs and
expenses incurred in connection with this Agreement and the transactions
contemplated hereby shall be paid by the party incurring the same; provided that
Acquirer shall pay up to $150,000 of the expenses of Target. All costs and
expenses incurred by the Shareholders shall be paid prior to the Closing Date or
other suitable arrangements acceptable to Acquirer with respect thereto shall be
made. Notwithstanding anything to the contrary contained herein, the
Shareholders shall be jointly and severally liable for the costs and expenses
incurred by Target in connection with the Agreement and the transactions
contemplated hereby which are in excess of $150,000.

      Section 12.04. Successors and Assigns. This Agreement will inure to the
benefit of and be binding upon the parties hereto and their respective
successors and permitted assigns, heirs, executors, administrators and legal
representatives. Neither this Agreement nor any of the rights, interests or
obligations hereunder shall be assigned by any of the parties hereto without the
prior written consent of the other parties hereto.

      Section 12.05. Entire Agreement. This Agreement and the other documents
referred to herein contain the entire agreement among the parties hereto with
respect to the transactions contemplated hereby, and controls and supersedes any
prior understandings, agreements or representations by or between the parties,
written or oral, which conflicts with, or may have related to, the subject
matter hereof in any way, including without limitation that certain letter dated
August 23, 1999, by and among Acquirer and Target.

      Section 12.06. Notices. All notices or other communications hereunder
shall be in writing and shall be deemed to have been duly given if delivered
personally or sent by telefax


                                       55
<PAGE>

communication, by recognized overnight courier marked for overnight delivery, or
by registered or certified mail, postage prepaid, addressed as follows:

            (a) If to Target, Will Hodgman, c/o AdRelevance, Inc., 2151 North
Northlake Way, Suite 210, Seattle WA 98103, with a copy to Venture Law Group,
4750 Carillon Point, Kirkland, Washington 98033, Attention: Craig Sherman;

            (b) If to Acquirer or Acquirer Sub, Media Metrix, Inc., 250 Park
Avenue South, New York, New York 10003, Attention: Tod Johnson, with a copy to:
Fulbright & Jaworski L.L.P., 666 Fifth Avenue, New York, New York 10103,
Attention: Richard Gilden, Esq., and

            (c) If to the Shareholders, to the address specified in Schedule 1.0
hereto; with a copy to Venture Law Group, 4750 Carillon Point, Kirkland,
Washington 98033, Attention: Craig Sherman.

            (d) Or such other addresses as shall be furnished by like notice by
such party. All such notices and communications shall, when telefaxed
(immediately thereafter confirmed by telephone), be effective when telefaxed, or
if sent by nationally recognized overnight courier service, be effective one
Business Day after the same has been delivered to such courier service marked
for overnight delivery, or, if mailed, be effective when received.

      Section 12.07. Applicable Law. This Agreement shall be governed by, and
construed in accordance with, the internal laws of the State of New York,
without reference to or application of any conflicts of laws principles.

      Section 12.08. Consent to Jurisdiction; Receipt of Process. Each party
hereby consents to the jurisdiction of, and confers non-exclusive jurisdiction
upon, any federal or state court located in the City of New York, New York and
appropriate appellate courts therefrom, over any action, suit or proceeding
arising out of or relating to this Agreement, or any of the transactions
contemplated hereby. Each party hereby irrevocably waives, and agrees not to
assert as a defense in any such action, suit or proceeding, any objection which
it may now or hereafter have to venue of any such action, suit or proceeding
brought in any such federal or state court and hereby irrevocably waives any
claim that any such action, suit or proceeding brought in any such court or
tribunal has been brought in an inconvenient forum. Process in any such action,
suit or proceeding may be served on any party anywhere in the world, whether
within or without the State of New York provided that notice thereof is provided
pursuant to provisions for notice under this Agreement.

      Section 12.09. No Third Party Beneficiaries. This Agreement shall not
confer any rights or remedies upon any Person other than the parties and their
respective successors and permitted assigns.

      Section 12.10. Amendments and Waivers. No amendment of any provision of
this Agreement shall be valid unless the same shall be in writing and signed by
each of the parties hereto;


                                       56
<PAGE>

provided, however, that the holders of a majority of the outstanding Target
Capital Stock as of the Closing shall have the right to amend any provision of
this Agreement on behalf of the Shareholders either prior to or following the
Closing unless any nonconsenting Shareholder is adversely affected by such
amendment in a manner different from other Shareholders. No waiver by any party
of any default, misrepresentation or breach of warranty or covenant hereunder,
whether intentional or not, shall be deemed to extend to any prior or subsequent
default, misrepresentation or breach of warranty or covenant hereunder or affect
in any way any rights arising by virtue of any prior or subsequent such
occurrence. At any time prior to the Closing, the parties hereto, by action
taken by their respective Boards of Directors and, in the case of the
Shareholders, by action taken by the holders of a majority of the outstanding
Target Capital Stock, may (i) extend the time for the performance of any of the
obligations or other acts of the other party hereto, (ii) waive any inaccuracies
in the representations and warranties of the other party hereto contained herein
or in any document delivered pursuant hereto and (iii) waive compliance with any
of the agreements or conditions contained herein.

      Section 12.11. Severability. Any term or provision of this Agreement that
is invalid or unenforceable in any situation in any jurisdiction shall not
affect the validity or enforceability of the remaining terms and provisions
hereof or the validity or enforceability of the offending term or provision in
any other situation or in any other jurisdiction.

      Section 12.12. Construction. The parties have participated jointly in the
negotiation and drafting of this Agreement. In the event an ambiguity or
question of intent or interpretation arises, this Agreement shall be construed
as if drafted jointly by the parties and no presumption or burden of proof shall
arise favoring or disfavoring any party by virtue of the authorship of any of
the provisions of this Agreement.

      Section 12.13. Counterparts. This Agreement may be executed in one or more
counterparts, each of which shall be deemed an original, but all of which
together shall constitute one and the same instrument.

      Section 12.14. Headings. The headings used in this Agreement are for
convenience only and are not to be considered in construing or interpreting any
term or provision of this Agreement.


                                       57
<PAGE>

      IN WITNESS WHEREOF, this Agreement has been duly executed and delivered by
the duly authorized officers of the parties hereto as of the date first written
above.

                                  MEDIA METRIX, INC.

                                  By: /s/ Mary Ann Packo
                                     ---------------------------

                                  Title: President


                                  JUPITER ACQUISITION CORP.

                                  By: /s/ Mary Ann Packo
                                     ---------------------------

                                  Title: President


                                  ADRELEVANCE, INC.

                                  By: /s/ Will Hodgman
                                     ---------------------------

                                  Name: Will Hodgman

                                  Title: Chief Executive Officer


                                  SHAREHOLDERS:

                                  REDLEAF VENTURE II, L.P.

                                  By: /s/ illegible
                                     ---------------------------

                                  Title: General Partner
                                        ------------------------


                                       58
<PAGE>


                                  THE GUIDE FUND II LP

                                  By: /s/ illegible
                                     -------------------------------

                                  Title: Managing Director
                                         ---------------------------


                                  SCOTT MILBURN

                                  By: /s/ Scott Milburn
                                     ---------------------------

                                  Title: Not Applicable
                                         ---------------------------


                                  JAMES T. BARTOT

                                  By: /s/ James T. Bartot
                                     -------------------------------

                                  Title: V.P. Engineering
                                         ---------------------------


                                  NORTHWEST VENTURE PARTNERS II LP

                                  By: /s/ Thomas C. Simpson
                                     -------------------------------

                                  Title: President
                                         ---------------------------


                                  INLAND NORTHWEST INVESTORS LP

                                  By: /s/ Thomas C. Simpson
                                     -------------------------------

                                  Title: President
                                         ---------------------------


                                       59
<PAGE>


                                  VLG INVESTMENTS 1998

                                  By: /s/ illegible
                                     -------------------------------

                                  Title: Director
                                         ---------------------------


                                  VLG INVESTMENTS 1999

                                  By: /s/ illegible
                                     -------------------------------

                                  Title: Director
                                         ---------------------------


                                  CRAIG HORMAN

                                  By: /s/ Craig Horman
                                     -------------------------------

                                  Title: Chief Technologist
                                         ---------------------------

                                  DAN WELD

                                  By: /s/ Dan Weld
                                     -------------------------------

                                  Title: Not Applicable
                                         ---------------------------


                                  MADRONA INVESTMENT GROUP, LLC

                                  By: /s/ illegible
                                     -------------------------------

                                  Title: illegible
                                         ---------------------------


                                       60
<PAGE>


                                  LINDEN RHOADS

                                  By: /s/ Linden Rhoads
                                     -------------------------------

                                  Title: Not Applicable
                                         ---------------------------


                                  1998 WELD CHILDREN'S TRUST

                                  By: /s/ Dan Weld
                                     -------------------------------

                                  Title: Not Applicable
                                         ---------------------------


                                  RICHARD LEFURGY

                                  By: /s/ Richard LeFurgy
                                         ---------------------------

                                  Title: Not Applicable
                                         ---------------------------


                                  CRAIG SHERMAN

                                  By: /s/ Craig Sherman
                                     -------------------------------

                                  Title: Not Applicable
                                         ---------------------------


                                  KEITH GRINSTEIN

                                  By: /s/ Keith Grinstein
                                     -------------------------------

                                  Title: Not Applicable
                                         ---------------------------


                                       61
<PAGE>

                                     WILLIAM W. ERICSON

                                     By: /s/ William W. Ericson
                                        ---------------------------------------

                                     Title: Not Applicable
                                            -----------------------------------


                                     WILL HODGMAN

                                     By: /s/ Will Hodgman
                                        ---------------------------------------

                                     Title: President & Chief Executive Officer
                                            -----------------------------------


                                     CNA TRUST, TRUSTEE FOR VLG 401 (K) FBO:
                                     CRAIG SHERMAN A/C# 1050524225

                                     By: /s/ Jeff Cohen
                                        ---------------------------------------

                                     Title: Vice President
                                            -----------------------------------


                                       62



                                                                     Exhibit 4.1

                                                                  EXECUTION COPY

                          REGISTRATION RIGHTS AGREEMENT

      REGISTRATION RIGHTS AGREEMENT (the "Agreement") made as of this 8th day of
October, 1999 by and among Media Metrix, Inc., a Delaware corporation (the
"Company"), and the securityholders of the Company set forth on Schedule I
hereto (the "Stockholders").

                              W I T N E S S E T H:

      WHEREAS, this Agreement is made pursuant to the Agreement and Plan of
Merger, dated as of 6th October, 1999, by and among the Company, Jupiter
Acquisition Corp., a Washington corporation and a wholly owned subsidiary of the
Company, AdRelevance, Inc., a Washington corporation ("Target")and the
Stockholders (the "Merger Agreement"), which provides for the issuance by the
Company to the Stockholders of 775,186 shares (the "Registrable Securities") of
common stock, par value $.01 per share, of the Company;

      WHEREAS, the parties hereto desire to promote the interests of the Company
and the interests of the Stockholders by establishing herein certain terms and
conditions upon which the Company will register the shares of Common Stock owned
by the Stockholders.

      NOW, THEREFORE, in consideration of the premises and mutual covenants and
agreements herein contained, and for other good and valuable consideration, the
receipt and sufficiency of which is hereby acknowledged, the parties hereto
agree as follows:

1. Certain Definitions. As used herein, the following terms shall have the
following respective meanings:

            "Closing Date" shall have the meaning ascribed to such term in the
Merger Agreement.

            "Common Stock" means the common stock, par value $.01 per share, of
the Company.

            "Commission" shall mean the Securities and Exchange Commission or
any other Federal agency at the time administering the Securities Act of 1933,
as amended (the "Securities Act").

<PAGE>

            "Holder" shall mean any holder of the Registrable Securities.

            "Investors' Rights Agreement" shall mean the investors' rights
agreement dated January 15, 1999 between Target and certain of the holders of
the capital stock of Target.

            "Lock-Up Period" shall have the meaning assigned such term in
Section 4.3 hereof.

            "Restricted Securities" shall mean the securities of the Company
required to bear or bearing the legend set forth in Section 2 hereof.

            "Registrable Securities" shall mean shares of (i) the Common Stock
held by the Stockholders or which may subsequently be distributed to the
Stockholders under the terms of the Merger Agreement and (ii) Common Stock
issued to the Stockholders upon any stock split, stock dividend, merger,
consolidation, recapitalization or similar event, excluding all such shares
which (x) have been registered under the Securities Act and disposed of in
accordance with the registration statement covering them, (y) have been publicly
sold pursuant to Rule 144 (or any successor rule) under the Securities Act
("Rule 144") or (z) are eligible for sale without restriction under Rule 144(k)
(or any successor rule) under the Securities Act ("Rule 144(k)").

            The terms "register", "registered" and "registration" shall refer to
a registration effected by preparing and filing a registration statement in
compliance with the Securities Act and applicable rules and regulations
thereunder, and the declaration or ordering of the effectiveness of such
registration statement.

            "Registration Expenses" shall mean all expenses incurred by the
Company in compliance with Section 4 hereof, including, without limitation, all
registration, qualification and filing fees, exchange listing fees, printing
expenses, escrow fees, fees and disbursements of counsel for the Company, blue
sky fees and expenses, the fees and expenses of one counsel for all the selling
Holders and other security holders and the expense of any special audits
incident to or required by any such registration (but excluding the compensation
of regular employees of the Company, which shall be paid in any event by the
Company).

            "Secondary Offering" shall have the meaning given such term in
Section 4.2(a) hereof.

            "Selling Expenses" shall mean all underwriting discounts and selling
commissions applicable to the sale of Registrable Securities and all fees and
disbursements of counsel for any Holder (other than the fees and disbursements
of counsel included under Registration Expenses).

            "Shelf Registration" shall have the meaning given such term in
Section 4.1(a) hereof.

      2. Restrictive Legend. Each certificate representing the Common Stock or
any other securities issued upon any stock split, stock dividend,
recapitalization, merger, consolidation or


                                      -2-
<PAGE>

similar event shall (unless otherwise permitted or unless the securities
evidenced by such certificate shall have been registered under the Securities
Act) be stamped or otherwise imprinted with a legend in substantially the
following form (in addition to any legend required under applicable state
securities laws):

      THESE SECURITIES HAVE NOT BEEN REGISTERED UNDER THE SECURITIES ACT OF
      1933, AS AMENDED (THE "ACT") OR ANY STATE SECURITIES LAWS. NO TRANSFER OF
      SAID SECURITIES SHALL BE PERMITTED IN THE ABSENCE OF (I) AN EFFECTIVE
      REGISTRATION STATEMENT UNDER THE ACT AND ANY APPLICABLE STATE LAWS
      COVERING THE SHARES PROPOSED TO BE TRANSFERRED OR (II) AN OPINION OF
      COUNSEL SATISFACTORY TO THE COMPANY THAT SUCH TRANSFER WILL NOT REQUIRE
      COMPLIANCE WITH THE REGISTRATION REQUIREMENTS OF THE ACT AND OF ANY
      APPLICABLE STATE LAWS.

            Upon request of a holder of such a certificate, the Company shall
remove the foregoing legend from the certificate or issue to such holder a new
certificate therefor free of any transfer legend, if (x) with such request, the
Company shall have received either an opinion referred to in (II) of the above
legend to the effect that any transfer by such holder of the securities
evidenced by such certificate will not violate the Securities Act and applicable
state securities laws, (y) in accordance with Rule 144(k), such holder is not
and has not during the last three months been an affiliate of the Company and
such holder has held the securities represented by such certificate for a period
of at least two years. The Company will use its best efforts to assist any
holder in complying with the provisions of this Section 2 for removal of the
legend set forth above.

      3. Notice of Proposed Transfers. The holder of each certificate
representing Restricted Securities by acceptance thereof agrees to comply in all
respects with the provisions of this Agreement. Prior to any proposed transfer
of any Restricted Securities (other than under circum stances described in
Section 4 hereof), the holder thereof shall give written notice to the Company
of such holder's intention to effect such transfer. Each such notice shall
describe the manner and circumstances of the proposed transfer in sufficient
detail, and shall be accompanied (except in transactions in compliance with Rule
144) by a written opinion of legal counsel who shall be satisfactory to the
Company, addressed to the Company and reasonably satisfactory in form and
substance to the Company's counsel, to the effect that the proposed transfer of
the Restricted Securities may be effected without registration under the
Securities Act and applicable state securities laws whereupon the holder of such
Restricted Securities shall be entitled to transfer such Restricted Securities
in accordance with the terms of the notice delivered by the holder to the
Company. Each certificate evidencing the Restricted Securities transferred as
above provided shall bear the appropriate restrictive legend set forth above
unless the opinion of counsel referred to above is to the further effect that no
such legend is required in order to establish compliance with any provisions of
the Securities Act or applicable state securities laws.


                                      -3-
<PAGE>

      4. Registration Rights.

      4.1 (a) Shelf Registration. In the event that the registration statement
covering the Secondary Offering does not become effective prior to the 90th day
following the Closing Date, the Company shall cause to be filed with the
Commission a shelf registration statement (the "Shelf Registration") on Form S-1
or any other appropriate form to register the Registrable Securities within
ninety (90) days after the Closing Date of the Merger, and shall use its best
efforts to effect such registration (including, without limitation, the
execution of an undertaking to file post-effective amendments, appropriate
qualification under applicable blue sky or other state securities laws (except
that the Company shall not be required to qualify the offering under the blue
sky laws of any jurisdiction in which the Company would be required to execute a
general consent to service of process unless the Company is already subject to
service in such jurisdiction) and appropriate compliance with applicable
regulations issued under the Securities Act) as may be so requested and as would
permit or facilitate the sale and distribution of the Registrable Securities.

            (b) Following the effective date of the Shelf Registration, each
Holder shall be entitled to sell the Registrable Securities held by such Holder.

            The registration statement filed pursuant to Section 4.1(a) may,
subject to the provisions of this Section 4.1 (b), include other securities of
the Company which are held by officers or directors of the Company or which are
held by persons who, by virtue of agreements with the Company are entitled to
include their securities in any such registration (collectively, "Other
Stockholders"). The Company shall promptly give notice of any registration
proposed under this Section 4.1 to such Other Stockholders.

            (c) The Company shall have the right to defer its obligation to
effect a registration for up to one hundred and twenty (120) calendar days if,
in the Company's good faith judgment, effecting a registration would be
seriously detrimental to the Company and an executive officer of the Company so
notifies the Holders in writing.

            (d) The Company shall have the right, upon five (5) days' prior
written notice to the Holders of Registrable Securities, exercisable once every
six (6) months, to suspend sales of Registrable Securities pursuant to an
effective shelf registration statement for a period not to exceed 90 days, in
the event that the Company is engaged in a material transaction which would
otherwise be required to be disclosed in a post-effective amendment to the
registration statement and the disclosure of which, in the good faith judgment
of the Company's Board of Directors, would have a material adverse effect on the
Company.

      4.2 Company Registration.

            (a) In the event that (i) the Company shall determine to register
any of its securities for its own account in an underwritten offering (the
"Secondary Offering") prior to the 90th day following the Closing Date, the
Company shall offer to the Stockholders the right to include in


                                      -4-
<PAGE>

such registration at least 226,462 shares of Common Stock, to be allocated among
the Holders in the same proportion that such Holder's shares bear to the total
Merger Consideration, or (ii) at any time after the later of January 1, 2000 or
the expiration of the Lock-Up Period, the Company shall determine to register
any of its securities either for its own account or the account of a security
holder or holders exercising their respective demand registration rights, in
each case other than a registration relating solely to employee benefit plans, a
registration relating solely to a Commission Rule 145 transaction or a
registration on any registration form which does not permit secondary sales, the
Company will:

                  (i) promptly within ten (10) days of such determination give
to each Holder written notice thereof; and

                  (ii) include in such registration and in any underwriting
involved therein, all the Registrable Securities specified in a written request
or requests, made by any Holder within twenty (20) days after receipt of the
written notice from the Company described in clause (i) above, except as set
forth in Section 4.2(b) below. Such written request may specify all or a part of
a Holder's Registrable Securities.

                  However, to the extent that a Holder participates in the Shelf
Registration, such Holder shall not be entitled to participate in the
registration referred to in (a) (ii) above.

            (b) Underwriting. If the registration of which the Company gives
notice pursuant to this Section 4.2 is for a registered public offering
involving an underwriting, the Company shall so advise the Holders by written
notice. All Holders proposing to distribute their securities through such
underwriting shall (together with the Company distributing its securities for
its own account through such underwriting) enter into an underwriting agreement
in customary form with the underwriter or underwriters selected by the Company.
Notwithstanding any other provision of this Section 4.2, but subject to the
provisions of Section 4.2 (a) hereof, if the representative of the underwriters
advises the Company in writing that, in its opinion, marketing factors require a
limitation on the number of shares to be underwritten, the Company shall so
advise all Holders of securities requesting registration, and the number of
shares that may be included in the registration and underwriting shall be
allocated first to the Company for securities being sold for its account and
then in the following manner: (i) the securities requested to be registered by
officers or directors of the Company shall be excluded from such registration
and underwriting to the extent required by such limitation in proportion, as
nearly as practicable, to the respective amounts of securities requested to be
registered by such officers and directors, and (ii) the securities being sold
for the account of the Holders and Other Stockholders shall be excluded from
such registration and underwriting to the extent required by such limitation in
proportion, as nearly as practicable, to the respective amounts of securities
requested to be included in such registration. If any Holder or Other
Stockholder who has requested inclusion in such registration as provided above
disapproves of the terms of the underwriting, such person may elect to withdraw
therefrom by written notice to the Company and the underwriter.


                                      -5-
<PAGE>

      4.3 Subsequent Shelf Registration. If the Company files a registration
statement pursuant to Section 4.2 above and the Holders do not sell all or any
portion of their shares in such registration, the Company shall use commercially
reasonable efforts to cause to be filed with the Commission a shelf registration
statement on Form S-1 or any other appropriate form to register the remaining
Registrable Securities within thirty (30) days (but in any event not to exceed
seventy-five (75) days of the expiration of any lock-up period effected in
accordance with such secondary public offering by the Company (the "Lock-Up
Period"), and shall use its best efforts to effect such registration (including,
without limitation, the execution of an undertaking to file post-effective
amendments, appropriate qualification under applicable blue sky or other state
securities laws (except that the Company shall not be required to qualify the
offering under the blue sky laws of any jurisdiction in which the Company would
be required to execute a general consent to service of process unless the
Company is already subject to service in such jurisdiction) and appropriate
compliance with applicable regulations issued under the Securities Act) as may
be so requested and as would permit or facilitate the sale and distribution of
the Registrable Securities. Each Holder hereby agrees to furnish to the Company
all information with respect to such Holder necessary to make the disclosure in
such registration with respect to such Holder not materially misleading. Sales
of Registrable Securities in any registration pursuant to this Section 4.3 shall
be subject to and in compliance with the terms and conditions of Section 4.1 (c)
and (d) hereof.

      4.4 Expenses of Registration.

            (a) The Company shall bear all Registration Expenses and the selling
securityholders shall bear all Selling Expenses (in proportion, as nearly as
practicable, to the securities of each securityholder being registered) incurred
in connection with any registration, qualification or compliance pursuant to the
provisions of Section 4.1 or 4.2.

            (b) The Company shall bear all Registration Expenses for the
registration pursuant to Section 4.3 and the selling securityholders shall bear
all Selling Expenses in connection therewith (in proportion, as nearly as
practicable, to the securities of each securityholder then being registered).
Thereafter, selling securityholders shall bear all Selling and Registration
Expenses (in proportion, as nearly as practicable, to the securities of each
securityholder then being registered).

      4.5 Registration Procedures. In the case of each registration effected by
the Company pursuant to this Agreement, the Company will keep each Holder
advised in writing as to the initiation of each registration and as to the
completion thereof. At its expense, the Company will:

            (a) Keep such registration effective for a period of two hundred
seventy (270) days or until the Holder or Holders have completed the
distribution described in the registration statement relating thereto, whichever
first occurs; provided, however, that in the case of any registration of
Registrable Securities on Form S-3 which are intended to be offered on a
continuous or delayed basis, such 270-day period shall be extended, if
necessary, to keep the registration statement effective until all such
Registrable Securities are sold, provided that if Rule 415, or any successor
rule under the Securities Act, permits an offering on a continuous or delayed
basis, and


                                      -6-
<PAGE>

provided further that if applicable rules under the Securities Act governing the
obligation to file a post-effective amendment permit, in lieu of filing a
post-effective amendment which (y) includes any prospectus required by Section
10(a)(3) of the Securities Act or (z) reflects facts or events represent ing a
material or fundamental change in the information set forth in the registration
statement, the incorporation by reference of information required to be included
in (y) and (z) above to be contained in periodic reports filed pursuant to
Section 13 or 15(d) of the Securities Exchange Act of 1934, as amended (the
"Exchange Act"), in the registration statement;

            (b) Prepare and file with the Commission such amendments and
supplements to such registration statement and the prospectus used in connection
with such registration statement as may be necessary to comply with the
provisions of the Securities Act with respect to the disposition of securities
covered by such registration statement;

            (c) Furnish such number of prospectuses and other documents incident
thereto, including any term sheet or any amendment of or supplement to the
prospectus, as a selling Holder from time to time may reasonably request;

            (d) Notify each seller, at its last known address as set forth in
the Company's books and records, of Registrable Securities covered by such
registration statement at any time when a prospectus relating thereto is
required to be delivered under the Securities Act of the happening of any event
as a result of which the prospectus included in such registration statement, as
then in effect, includes an untrue statement of a material fact or omits to
state a material fact required to be stated therein or necessary to make the
statements therein not misleading or incomplete in the light of the
circumstances then existing, and at the request of any such seller, prepare and
furnish to such seller a reasonable number of copies of a supplement to or an
amendment of such prospectus as may be necessary so that, as thereafter
delivered to the purchaser of such shares, such prospectus shall not include an
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 not misleading or
incomplete in the light of the circumstances then existing;

            (e) Cause all such Registrable Securities to be listed on each, if
any, securities exchange on which similar securities issued by the Company are
then listed;

            (f) Provide a transfer agent and registrar for all Registrable
Securities and a CUSIP number for all such Registrable Securities, in each case
not later than the effective date of such registration;

            (g) Make available for inspection by any seller of Registrable
Securities, any underwriter participating in any disposition pursuant to such
registration statement, and any attorney or accountant retained by any such
seller or underwriter, all financial and other records, pertinent corporate
documents and properties of the Company, and cause the Company's officers and
directors to supply all information reasonably requested by any such seller,


                                      -7-
<PAGE>

underwriter, attorney or accountant in connection with such registration
statement; provided, however, that such seller, underwriter, attorney or
accountant shall agree to hold in confidence and trust all information so
provided;

            (h) Furnish to each selling Holder a signed counterpart, addressed
to the selling Holder, of an opinion of counsel for the Company, dated the
effective date of the registration statement, and "comfort" letters signed by
the Company's independent public accountants who have examined and reported on
the Company's financial statements included in the registration statement, to
the extent permitted by the standards of the AICPA or other relevant
authorities, covering sub stantially the same matters with respect to the
registration statement (and the prospectus included therein) and (in the case of
the accountants' "comfort" letters) with respect to events subsequent to the
date of the financial statements, as are customarily covered in opinions of
issuer's counsel and in accountants' "comfort" letters delivered to the
underwriters in underwritten public offerings of securities; and

            (i) Otherwise use its best efforts to comply with all applicable
rules and regulations of the Commission, and make available to its security
holders, as soon as reasonably practicable, an earnings statement covering the
period of at least twelve months, but not more than eighteen months, beginning
with the first month after the effective date of the Registration Statement,
which earnings statement shall satisfy the provisions of Section 11(a) of the
Securities Act.

      5. Indemnification.

            (a) The Company will indemnify each Holder, each of its officers,
directors and partners, and each person controlling such Holder, with respect to
which registration, qualification or compliance has been effected pursuant to
Section 4 hereof, and each underwriter, if any, and each person who controls any
underwriter, against all claims, losses, damages and liabilities (or actions,
proceedings or settlements in respect thereof) arising out of or based on any
untrue statement (or alleged untrue statement) of a material fact contained in
any prospectus or other document (including any related registration statement)
incident to any such registration, qualification or compliance, or based on any
omission (or alleged omission) to state therein a material fact required to be
stated therein or necessary to make the statements therein not misleading, and
will reimburse each such Holder, each of its officers, directors and partners,
and each person controlling such Holder, each such underwriter and each person
who controls any such underwriter, for any legal and any other expenses as they
are reasonably incurred in connection with investigating and defending any such
claim, loss, damage, liability or action, provided that the Company will not be
liable in any such case to the extent that any such claim, loss, damage,
liability or expense arises out of or is based on any untrue statement or
omission based upon written information furnished to the Company by such Holder
or underwriter and stated to be specifically for use therein or to the extent
due to the failure of such Holder or underwriter to provide an updated
prospectus or other document to a purchaser at a time when the Company has
informed such Holder or underwriter of a material misstatement or omission in a
prospectus or other document and has provided updated prospectuses or other
documents correcting such misstatement or omission.


                                      -8-
<PAGE>

            (b) Each Holder will, if Registrable Securities held by it are
included in the securities as to which such registration, qualification or
compliance is being effected, indemnify the Company, each of its directors and
officers and each underwriter, if any, of the Company's securities covered by
such a registration statement, each person who controls the Company or such
underwriter within the meaning of the Securities Act and the rules and
regulations thereunder, each other Holder and each of their officers, directors
and partners, and each person controlling such Holder, against all claims,
losses, damages and liabilities (or actions in respect thereof) arising out of
or based on any untrue statement (or alleged untrue statement) of a material
fact contained in any such registration statement, prospectus or other document,
or any omission (or alleged omission) to state therein a material fact required
to be stated therein or necessary to make the statements therein not misleading,
and will reimburse the Company and such Holders, directors, officers, partners,
persons, underwriters or control persons for any legal or any other expenses
reasonably incurred in connection with investi gating or defending any such
claim, loss, damage, liability or action, in each case to the extent, but only
to the extent, that such untrue statement (or alleged untrue statement) or
omission (or alleged omission) is made in such registration statement,
prospectus or other document in reliance upon and in conformity with written
information furnished to the Company by such Holder and stated to be
specifically for use therein; provided, however, that the obligations of such
Holders hereunder shall be limited to an amount equal to the net proceeds to
each such Holder of securities sold as contemplated herein.

            (c) Each party entitled to indemnification under this Section 5 (the
"Indemnified Party") shall give notice in writing to the party required to
provide indemnification (the "Indemnifying Party") promptly after such
Indemnified Party has actual knowledge of any claim as to which indemnity may be
sought, and shall permit the Indemnifying Party to assume the defense of any
such claim or any litigation resulting therefrom, provided that counsel for the
Indemnifying Party, who shall conduct the defense of such claim or any
litigation resulting therefrom, shall be approved by the Indemnified Party
(whose approval shall not unreasonably be withheld), and the Indemnified Party
may participate in such defense at such Indemnified Party's expense; provided,
however, that the Indemnifying Parties shall pay the expense of one counsel for
all similarly situated Indemnified Parties if representation of such Indemnified
Parties by the counsel retained by the Indemnifying Party would be inappropriate
due to actual or potential differing interests between the Indemnified Parties
and any other party represented by such counsel in such proceeding, and provided
further that the failure of any Indemnified Party to give notice as provided
herein shall not relieve the Indemnifying Party of its obligations under this
Section 5, unless such failure prejudices the ability of the Indemnifying Party
to defend against the claims asserted against the Indemnified Party. No
Indemnifying Party, in the defense of any such claim or litigation, shall,
except with the consent of each Indemnified Party, consent to entry of any
judgment or enter into any settlement which does not include as an unconditional
term thereof the giving by the claimant or plaintiff to such Indemnified Party
of a release from all liability in respect to such claim or litigation and no
Indemnified Party shall consent to entry of any judgment or settle such claim or
litigation without the prior written consent of the Indemnifying Party. Each
Indemnified Party shall furnish such information regarding itself or the claim
in question as an Indemnifying Party may reasonably


                                      -9-
<PAGE>

request in writing and as shall be reasonably required in connection with
defense of such claim and litigation resulting therefrom.

            (d) If the indemnification provided for in this Section 5 is
unavailable to an Indemnified Party in respect of any losses, claims, damages or
liabilities referred to therein, then each Indemnifying Party, in lieu of
indemnifying such Indemnified Party, shall contribute to the amount paid or
payable by such Indemnified Party as a result of such losses, claims, damages or
liabilities in such proportion as is appropriate to reflect the relative fault
of the Company on the one hand and the stockholders offering securities in the
offering (the "Selling Stockholders") on the other in connection with the
statements or omissions which resulted in such losses, claims, damages or
liabilities, as well as any other relevant equitable considerations. The
relative fault of the Company on the one hand and the Selling Stockholders on
the other shall be determined by reference to, among other things, whether the
untrue or alleged untrue statement of material fact or the omission or alleged
omission to state a material fact relates to information supplied by the Company
or by the Selling Stockholders and the parties' relevant intent, knowledge,
access to information and opportunity to correct or prevent such statement or
omission. The Company and the Selling Stockholders agree that it would not be
just and equitable if contribution pursuant to this Section 5(d) were based
solely upon the number of entities from whom contribution was requested or by
any other method of allocation which does not take account of the equitable
considerations referred to above in this Section 5(d). The amount paid or
payable by an Indemnified Party as a result of the losses, claims, damages and
liabilities referred to above in this Section 5(d) shall be deemed to include
any legal or other expenses reasonably incurred by such Indemnified Party in
connection with investigating or defending any such action or claim, subject to
the provisions of Section 5(d) hereof. Notwithstanding the provisions of this
Section 5(d), no Selling Stockholder shall be required to contribute any amount
or make any other payments under this Agreement which in the aggregate exceed
the net proceeds received by such Selling Stockholder pursuant to the sale of
securities contemplated herein. No person guilty of fraudulent misrepresentation
(within the meaning of the Securities Act) shall be entitled to contribution
from any person who was not guilty of such fraudulent misrepresentation.

      6. Information by Holder. Each Holder shall furnish to the Company such
information regarding such Holder and the distribution proposed by such Holder
as the Company may reasonably request in writing and as shall be reasonably
required in connection with any registration, qualification or compliance
referred to in this Agreement.

      7. "Lock-Up" Agreement. Each Stockholder, if requested by the Company and
the managing underwriter of an offering by the Company of Common Stock or other
securities of the Company pursuant to a Registration Statement, shall agree not
to sell publicly or otherwise transfer or dispose of any Registrable Shares or
other securities of the Company held by such Stockholder for a specified period
of time (not to exceed ninety (90) days unless the underwriters of any such
registration impose a longer period on all participants) following the effective
date of such Registration Statement; provided that all executive officers and
directors of the Company enter into similar agreements.


                                      -10-
<PAGE>

      8. Limitations on Registration of Issues of Securities. From and after the
date of this Agreement, the Company shall not enter into any agreement with any
holder or prospective holder of any securities of the Company giving such holder
or prospective holder a right to require the Company to initiate any
registration of any securities of the Company or to require the Company, upon
any registration of any of its securities, to include, among the securities
which the Company is then registering, securities owned by such holder which is
superior to the rights granted hereunder, except with the prior written consent
of the holders of a majority of the Registrable Securities.

      9. Rule 144 Reporting. With a view to making available the benefits of
certain rules and regulations of the Commission which may permit the sale of the
Restricted Securities to the public without registration, the Company agrees to:

            (a) use its best efforts to make and keep public information
available as those terms are understood and defined in Rule 144 at all times
from and after ninety (90) days following the effective date of the first
registration under the Securities Act filed by the Company for an offering of
its securities to the general public;

            (b) use its best efforts to file with the Commission in a timely
manner all reports and other documents required of the Company under the
Securities Act and the Exchange Act; and

            (c) so long as the Holders own any Restricted Securities, furnish to
the Holders forthwith upon request a written statement by the Company as to its
compliance with the reporting requirements of Rule 144 (at any time from and
after ninety (90) days following the effective date of the first registration
statement filed by the Company for an offering of its securities to the general
public), and of the Securities Act and the Exchange Act, a copy of the most
recent annual or quarterly report of the Company, and such other reports and
documents so filed as the Holders may reasonably request in availing themselves
of any rule or regulation of the Commission allowing the Holders to sell any
such securities without registration.

      10. Transfer or Assignment of Registration Rights. The rights to cause the
Company to register securities granted to the Holders by the Company under
Section 4 may be transferred or assigned, provided that the Company is given
written notice at the time of or within a reasonable time after said transfer or
assignment, stating the name and address of said transferee or assignee and
identifying the Registrable Securities with respect to which such registration
rights are being transferred or assigned, and provided further that the
transferee or assignee of such rights assumes the obligations of the Holders
under this Agreement, and provided further that said transferee or assignee is
not a Competitor or an affiliate of a Competitor of the Company. A "Competitor"
shall mean any of the following: AC Nielsen, Ceridian, Nielsen Media Research,
Inc., Forrester Research, IntelliQuest, Odessey, Reuters, Site-Centric
measurement systems (e.g. Internet Profiles Corporation), Consumer-Centric
measurement systems (e.g. PC Data), International Data Corporation, Gartner
Group, @Plan, United News and Media, VNU, WPP and any others which, now or in
the future, compete directly with the Company.


                                      -11-
<PAGE>

      11. Termination. The provisions of Sections 4.1, 4.2 and 4.3 of this
Agreement shall terminate on the third anniversary of the date of this
Agreement.

      12. Cancellation of Investors' Rights Agreement. To the extent that a
Stockholder is a party to the Investors' Rights Agreement, such Stockholder
hereby agrees to the cancellation of the Investors' Rights Agreement with effect
from the Closing Date.

      13. Consent. The Company hereby represents and warrants that the
performance of this Agreement will not conflict with that certain registration
rights agreement dated as of November 5, 1998 by and among the Company and
certain of its security holders and no consent other than any consents obtained
by the Company is required to enter into this Agreement.

      14. Amendment; Waiver. No amendment, alteration or modification of this
Agreement shall be valid unless in each instance such amendment, alteration or
modification is expressed in a written instrument executed by the Holders of a
majority of the Registrable Securities. No waiver of any provision of this
Agreement shall be valid unless it is expressed in a written instrument duly
executed by the party or parties making such waiver. The failure of any party to
insist, in any one or more instances, on performance of any of the terms and
conditions of this Agreement shall not be construed as a waiver or
relinquishment of any rights granted hereunder or of the future performance of
any such term, covenant or condition but the obligation of any party with
respect thereto shall continue in full force and effect.

      15. Specific Performance. The parties hereby declare that it is impossible
to measure in money the damages which will accrue to a party hereto by reason of
a failure to perform any of the obligations under this Agreement. Therefore, all
parties hereto shall have the right to specific performance of the obligations
of the other parties under this Agreement, and if any party hereto shall
institute an action or proceeding to enforce the provisions hereof, any person
(including the Company) against whom such action or proceeding is brought hereby
waives the claim or defense therein that such party has an adequate remedy at
law, and such person shall not urge in any such action or proceeding the claim
or defense that such remedy at law exists.

      16. Notices. All notices and other communications required or permitted
hereunder shall be in writing and shall be mailed by first-class mail, postage
prepaid, return receipt requested, or transmitted by facsimile or delivered
either by hand, by messenger or by nationally recognized overnight courier,
addressed:

            (a) if to the Holders, at the addresses set forth on the Schedule I
      attached hereto or at such other address as they shall have furnished to
      the Company in writing.

            (b) if to any other holder of securities of the Company at such
      address as such holder shall have furnished the Company in writing, or,
      until any such holder so furnishes an address to the Company, then to and
      at the address of the last holder thereof who has so furnished an address
      to the Company, and


                                      -12-
<PAGE>

            (c) if to the Company, to the following address, or at such other
      address as the Company shall have furnished to the Holders,

                        250 Park Avenue South
                        7th Floor
                        New York, New York
                        10003
                        Attention: Tod Johnson

          with a copy to:

                        Fulbright & Jaworski L.L.P.
                        666 Fifth Avenue
                        New York, New York 10103
                        Attention:  Richard Gilden
                        Fax: (212) 752-5958

      Alternatively, to such other address as a party hereto supplies to each
other party in writing.

      17. Successors and Assigns. All the terms and provisions of this Agreement
shall be binding upon and inure to the benefit of and be enforceable by the
respective permitted transferees, successors and assigns of the parties hereto,
whether so expressed or not.

      18. Governing Law. This Agreement is to be governed by and interpreted
under the laws of the State of New York without giving effect to the principles
of conflicts of laws thereof.

      19. Titles and Subtitles. The titles of the sections of this Agreement are
for the convenience of reference only and are not to be considered in construing
this Agreement.

      20. Severability. The invalidity or unenforceability of any provisions of
this Agreement shall not be deemed to affect the validity or enforceability of
any other provision of this Agreement.

      21. Counterparts. This Agreement may be executed in any number of
counterparts, each of which shall be an original, but all of which together
shall constitute one instrument.

      22. Entire Agreement. This Agreement constitutes the full and entire
understanding and agreement between the parties with respect to the subject
matter hereof and supersedes all previous agreements, arrangements and
understandings, whether written or oral, with respect to the subject matter
hereof.


                                      -13-
<PAGE>

      IN WITNESS WHEREOF, the parties hereto have executed this Registration
Rights Agreement as of the date first above written.

                                       MEDIA METRIX, INC.


                                       By: /s/ Mary Ann Packo
                                           -------------------------------------
                                           Name: Mary Ann Packo
                                           Title: President


                                      -14-

<PAGE>

                           COUNTERPART SIGNATURE PAGE

      The undersigned, intending to be bound by and become a party to, the
Registration Rights Agreement dated as of first set forth herein by and among
Media Metrix, Inc. (the "Company") and the other signatories hereto does hereby
execute this Counterpart Signature Page to said Registration Rights Agreement.

                                      DAN WELD

                                      By: /s/ Dan Weld
                                          --------------------------------------

                                      Title: Not Applicable


                                      CRAIG B. HORMAN

                                      By: /s/ Craig B. Horman
                                          --------------------------------------

                                      Title: Not Applicable


                                      MADRONA INVESTMENT GROUP LLC

                                      By: /s/ illegible
                                          --------------------------------------

                                      Title: ___________________________________


                                      JAMES T. BARTOT

                                      By: /s/ James T. Bartot
                                          --------------------------------------

                                      Title: Vice President Engineering


                                      -15-

<PAGE>

                                      NORTHWEST VENTURE PARTNERS II LP

                                      By: /s/ Thomas Simpson
                                          --------------------------------------

                                      Title: President


                                      INLAND INVESTMENT INVESTORS LP

                                      By: /s/ Thomas Simpson
                                          --------------------------------------

                                      Title: President


                                      RICHARD LEFURGY

                                      By: /s/ Richard LeFurgy
                                          --------------------------------------

                                      Title: Not Applicable


                                      CNA TRUST, TRUSTEE FOR VLG 401 (K) FBO:
                                      CRAIG SHERMAN

                                      By: /s/ illegible
                                          --------------------------------------

                                      Title: Vice President


                                      REDLEAF VENTURE II, LP

                                      By: /s/ illegible
                                          --------------------------------------

                                      Title: General Partner


                                      -16-
<PAGE>

                                      VLG INVESTMENT 1998

                                      By: /s/ illegible
                                          --------------------------------------

                                      Title: Director


                                      VLG INVESTMENT 1998

                                      By: /s/ illegible
                                          --------------------------------------

                                      Title: Director


                                      VLG INVESTMENT 1999

                                      By: /s/ illegible
                                          --------------------------------------

                                      Title: Director


                                      GUIDE FIND II LP

                                      By: /s/ illegible
                                          --------------------------------------

                                      Title: Managing Director


                                      SCOTT MILBURN

                                      By: /s/ Scott Milburn
                                          --------------------------------------

                                      Title: Not Applicable


                                      -17-
<PAGE>

                                      WILLIAM W. ERICSON

                                      By: /s/ William W. Eriscon
                                          --------------------------------------

                                      Title: Not Applicable


                                      CRAIG SHERMAN

                                      By: /s/ Craig Sherman
                                          --------------------------------------

                                      Title: Not Applicable


                                      KEITH GRINSTEIN

                                      By: /s/ Keith Grinstein
                                          --------------------------------------

                                      Title: Not Applicable


                                      WILL HODGMAN

                                      By: /s/ Will Hodgman
                                          --------------------------------------

                                      Title: President & Chief Executive Officer


                                      LINDEN RHOADS

                                      By: /s/ Linden Rhoads
                                          --------------------------------------

                                      Title: Not Applicable


                                      -18-
<PAGE>

                                      1998 WELD CHILDREN'S TRUST

                                      By: /s/ Dan Weld
                                          --------------------------------------

                                      Title: Not Applicable


                                      SCOTT MILBURN

                                      By: /s/ Scott Milburn
                                          --------------------------------------

                                      Title: Not Applicable


                                      -19-


                                                                    Exhibit 99.1

[MEDIA METRIX LOGO]

FOR IMMEDIATE RELEASE

Contact: Michelle Beilsmith    Max Kalehoff            Adam Sugerman
         Media Metrix, Inc.    Burson-Marstellar       AdRelevance
         212-515-8737          212-614-4055            206-328-8835
         [email protected]   [email protected]     [email protected]

                       MEDIA METRIX TO ACQUIRE ADRELEVANCE
 Combined Companies to Advance Internet and Digital Media Measurement Worldwide

      NEW YORK CITY -- October 6, 1999 -- Media Metrix (NASDAQ: MMXI), the
pioneer and leader in Internet and digital media measurement, announced today
that it has signed a definitive agreement to acquire AdRelevance, an innovator
and pioneer in Internet advertising measurement and intelligent agent ad
tracking technology.

      The AdRelevance Ad Reporting Service adds depth to the Media Metrix
product portfolio by offering tracking data on ad spending, placement, creative
and competitive online advertising market share. This information, combined with
the breadth of Media Metrix' audience and e-commerce measurement services, is a
critical link to the continued growth and development of the Internet. When used
together, data from both companies can provide an even better understanding of
the digital marketplace to advertisers, advertising agencies, media
organizations, financial analysts and e-commerce marketers.

      "Our expansion into the advertising-tracking arena represents the next
step in Media Metrix' growth strategy," said Tod Johnson chairman and chief
executive officer of Media Metrix, Inc. "The acquisition of AdRelevance extends
our coverage to include the tracking of advertising placement and creative,
along with Internet audiences, e-commerce and technology."

                                     -more-
<PAGE>

      "The combination with AdRelevance means that Media Metrix will offer
in-depth data about what advertisers are doing online," said Mary Ann Packo,
president and chief operating officer of Media Metrix, Inc. "Through
AdRelevance, Media Metrix will provide clients with detailed advertising
tracking data to help them identify and act on Internet advertising
opportunities."

      "We're thrilled to become a part of Media Metrix. Both companies share a
fast-paced culture and the drive to stay in step with technology development,
marketplace demands and the changes and rapid growth of the industries we
serve," said Will Hodgman, president and chief executive officer of AdRelevance.
"Media Metrix and AdRelevance share a mission to provide superior client service
and the timely intelligence that clients need to achieve their business
objectives."

About the AdRelevance Ad Measurement Service

      AdRelevance specializes in the automated retrieval and delivery of online
advertising, providing advertisers, agencies and publishers with marketing
intelligence that tells them where, when, how and how much their competition is
marketing and advertising on the Internet.

      The AdRelevance Service, powered by the OMNIAC(TM) technology (Online
Media Network Intelligent Agent Collection), systematically scours the
commercial sites on the Web searching for and capturing detailed data about
advertising banners, promotions, sponsorships, text links and rich media 24
hours a day. Once captured, the data are warehoused, classified and
statistically analyzed. The OMNIAC(TM) technology was developed by the
AdRelevance core development team, including engineers best known for developing
the MetaCrawler(TM) search technology currently licensed to Go2Net and
Jango(TM), which was purchased by Excite in 1997.

      Using a user-friendly online interface, clients can query the AdRelevance
database and generate Web-based reports on demand. The result is the ability to
monitor competitors' marketing activities, plan more effective online campaigns
and evaluate campaigns in real time.

                                     -more-
<PAGE>

About the Transaction, Management and Operations Structure

      The acquisition is a stock-for-stock transaction valued at approximately
$59.4 million. Additional shares of Media Metrix common stock having a value of
approximately $6.3 million (based on closing price of Media Metrix common stock
on October 4, 1999) may be issued upon AdRelevance achieving certain
post-closing goals. The merger agreement, which is subject to certain customary
closing conditions, is expected to close shortly.

      AdRelevance will become a wholly owned subsidiary of Media Metrix, Inc.,
with Will Hodgman remaining as president and chief executive officer of
AdRelevance and reporting to Mary Ann Packo. Otherwise, each company's
management and reporting structure will not change. Media Metrix headquarters
will remain in New York City. AdRelevance's main offices will remain in Seattle.
The companies will share sales and service offices in New York City, Seattle,
Atlanta, San Francisco and Uniondale, NY.

Additional Financing

      Media Metrix also announced today its intention to file a registration
statement with the Securities and Exchange Commission for the offering of
approximately 3 million shares of common stock, of which approximately 1 to 1.5
million shares will be offered by the company, and the remainder will be offered
by selling stockholders. The registration statement is expected to be filed
within the next few days. The offering will be made only by means of a
prospectus.

About AdRelevance

      Founded in 1998, Seattle-based AdRelevance, Inc. is an innovator and
pioneer in Internet advertising measurement and intelligent agent ad tracking
technology. The company's intelligent agent technology combs over 2,000 Web
sites daily and evaluates 40 million page views monthly to provide comprehensive
and in-depth advertising tracking information. Using the AdRelevance Service,
advertisers gain access to up-to-date intelligence about their competitors'
online marketing communications programs, enabling them to quickly and easily
compare and report information by a wide range of criteria including advertiser,
product, message, type, industry, location, technology and creative. More
information on the company and an interactive demo of its service is available
at www.AdRelevance.com or by calling 1-888-649-6540.

                                     -more-
<PAGE>

About Media Metrix

      Media Metrix, Inc., the pioneer and leader in Internet and digital media
measurement, is the industry's leading source for comprehensive and timely
audience ratings and e-commerce measurement services. The company utilizes its
patented metering methodology to measure the actual Internet and digital media
usage behavior of tens of thousands of people in real-time - click-by-click,
page-by-page, second-by-second. Media Metrix provides its comprehensive
measurement services to more than 500 client companies, including leading
financial services organizations, advertising agencies, new and traditional
media companies, e-commerce marketers and technology companies. Media Metrix has
active operations across multiple regions of the world including the United
States, Europe (under MMXI Europe), and Australia. For more information about
Media Metrix, please visit www.mediametrix.com.

                                     # # #

"Safe Harbor" Statement under the Private Securities Litigation Reform Act of
1995: Statements in this press release regarding Media Metrix, Inc.'s business
which are not historical facts are "forward looking statements" that involve
risks and uncertainties. We refer you to the documents the Company files from
time to time with the Securities and Exchange Commission. These documents
contain and identify important factors that could cause actual results to differ
materially from those contained in our projections or forward-looking
statements.

Note to Editors: Today at 1 p.m., EDT, Media Metrix will hold a press conference
call to discuss this new combination and to answer questions from the news
media. Today's call-in number is 1.800.230.1766. International callers can join
us by calling 1.612.332.0107. The name of the conference call is "Media Metrix."



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