EXHIBIT 6
NICKEL ACQUISITION CORP.
POWER OF ATTORNEY
The undersigned, the PRESIDENT of Nickel Acquisition Corp., a New York
corporation (the "Corporation"), hereby constitutes and appoints Marc Henon, his
true and lawful attorney-in-fact and agent with full power of substitution and
resubstitution, for him and in his name, place and stead, in any and all
capacities, to sign, on behalf of the Corporation, (i) all filings with the
Securities and Exchange Commission, including a statement of beneficial
ownership on Form 3 and a report on Schedule 13D, relating to the Shareholders'
Agreement, dated as of December 22, 2000 among the Corporation, SEAT Pagine
Gialle, S.p.A. ("SEAT"), Sogerim, Societe Anonyme ("Sogerim"), and certain
shareholders of NetCreations, Inc. ("NetCreations") and (ii) all other documents
reasonably relating thereto and to the Agreement and Plan of Merger, dated as of
December 22, 2000 among the Corporation, SEAT, Sogerim and NetCreations, as such
attorney-in-fact shall deem appropriate, granting unto said attorney-in-fact and
agent full power and authority to do and perform each and every act and thing
requisite and necessary to be, as fully as to all intents and purposes as he
might or could do in person, hereby ratifying and confirming all that said
attorney-in- fact and agent, or his substitute or substitutes, may lawfully do
and cause to be done by virtue hereof.
IN WITNESS WHEREOF, the undersigned has executed this Power of
Attorney this 22nd day of December, 2000.
By: /s/ Filippo Zamparelli
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Name: Filippo Zamparelli
Title: President
