CMGI, Inc. (Nasdaq: CMGI) will release financial results for its first fiscal quarter of fiscal year 2005, ended October 31, 2004, on Monday, December 6, 2004 after the market close.

Following the release, CMGI management will host a conference call to discuss the results. The conference call will begin at 5:00 p.m. ET. The conference call is open to all interested parties and will be hosted by Chief Executive Officer Joseph C. Lawler and Chief Financial Officer Tom Oberdorf. A live webcast of the call will be available on the Investor Relations section of the Company's web site.

DIAL-IN:

U.S. callers: (877) 209-0397

International callers: (612) 332-0226

WEBCAST:

Investors can listen to the conference call on the Internet at www.cmgi.com/investor. To listen to the live call, go to the Web site at least 15 minutes prior to the start time to download and install the necessary audio software.

About CMGI

CMGI, Inc. (Nasdaq: CMGI), through its subsidiaries, ModusLink and SalesLink, provides technology and product solutions that help businesses market, sell and distribute their products and services. In addition, CMGI's venture capital affiliate, @Ventures, invests venture capital in a variety of technology ventures. For additional information see www.cmgi.com.