CMGI Declares Two-For-One Stock Split.

ANDOVER, Mass.--(BUSINESS WIRE)--Dec. 17, 1998--CMGI, Inc. (NASDAQ:CMGI) today announced that the company's Board of Directors has declared a two-for-one common stock split.

The two-for-one stock split will be effected in the form of a 100 percent stock dividend. Stockholders will receive one share of common stock for each share held on the record date, December 28, 1998. Stock certificates will be distributed on January 11, 1999.

Total outstanding shares after the stock split will be approximately 46 million shares compared with the current outstanding shares of about 23 million.

About CMGI

A recognized leader in the Internet arena, CMGI (NASDAQ:CMGI) combines venture investment with Internet operating companies to create a broad and diverse portfolio of businesses delivering innovative Internet solutions. Microsoft, Intel and Sumitomo hold minority positions in CMGI.

The CMGI Internet Group consists of its majority-owned subsidiary companies Planet Direct, NaviSite, NaviNet, Engage Technologies, ADSmart, and The Password, as well as a minority investment in Magnitude Network.

The company's CMG@Ventures investment affiliates have ownership interests in Lycos, Inc. (NASDAQ:LCOS), blaxxun, GeoCities (NASDAQ:GCTY), Vicinity, Parable, KOZ, Silknet, Chemdex, Speech Machines, Softway Systems, TicketsLive, Critical Path, Mother Nature, Raging Bull, Universal Learning Technology, Virtual Ink, Ancestry.com, and Visto. CMGI also includes CMG Direct, SalesLink, InSolutions

and On-Demand Solutions as wholly owned subsidiaries in the direct marketing, fulfillment and turn-key arenas.

Corporate headquarters is located at 100 Brickstone Square, Andover, MA 01810. Telephone: [phone]. Fax: [phone]. Additional information is available on the company's Web site, http://www.cmgi.com.