ADVISORY/CMGI To Convene Annual Stockholders Meeting; Will Host Live Webcast of Annual Meeting.

Business Editors/High-Tech Writers

ADVISORY...for Wednesday (Dec. 10)

CHARLESTOWN, Mass.--(BUSINESS WIRE)--Dec. 3, 2003

CMGI, Inc. (Nasdaq: CMGI) will host its Annual Meeting of Stockholders on Wednesday, December 10, 2003, beginning at 9:00 a.m. at the offices of Vitale, Caturano & Company, P.C., 80 City Square, Boston, Massachusetts. The meeting also will be webcast from CMGI's corporate web site at http://www.cmgi.com/investor. The webcast is open to all interested parties, including press and individual investors, and will be hosted by George A. McMillan, President and CEO.

Following the evaluation of competitive offers from several audit firms, the Audit Committee of the Board of Directors of the Company has selected KPMG LLP to audit the Company's consolidated financial statements for the fiscal year ending July 31, 2004. A representative of KPMG, which served as the Company's independent auditors for fiscal 2003, is expected to be present at the Annual Meeting to be available to respond to appropriate questions from stockholders and to make a statement if so desired.

Admission to CMGI's Annual Meeting will be on a first-come, first-served basis. An admission ticket and picture identification will be required to enter the Meeting and each stockholder will be entitled to bring one guest. Stockholders holding CMGI stock in bank or brokerage accounts may obtain an admission ticket in advance by sending or faxing a written request, along with proof of share ownership (such as a brokerage statement or a copy of the vote instruction form recently mailed with the proxy and annual report), to CMGI Investor Relations, 425 Medford Street, Charlestown, MA 02129 (by mail) or to CMGI Investor Relations, [phone] (by fax).

Members of the press may attend the annual meeting in person upon advance registration with CMGI Corporate Communications. Cameras, cell phones, recording equipment and other electronic devices will not be permitted at the Meeting.

WHAT:      CMGI 2003 Annual Meeting of Stockholders

WHERE:     The Offices of Vitale, Caturano & Company, P.C.,
           80 City Square, Boston, Massachusetts

WHEN:      Wednesday, December 10, 2003, 9:00 a.m. Eastern Time

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) provides technology and commerce solutions that help businesses market, sell and distribute their products and services. CMGI offers industry-leading global supply chain management and distribution and fulfillment services. For additional information, see www.cmgi.com.