CMGI Names Joseph C. Lawler President and Chief Executive Officer

WALTHAM, MA - August 24, 2004 - CMGI, Inc. (Nasdaq: CMGI) today announced it has appointed Joseph C. Lawler as President and Chief Executive Officer of the Company. Lawler takes over the post from George A. McMillan, who oversaw the repositioning of CMGI from an Internet operating and development company to an integrated solutions provider for global customers.

Over the last 8 years, Lawler has led RR Donnelley's (RRD) transition from an asset-based printer to an integrated solutions provider for global customers. As Executive Vice President he diversified the RRD portfolio by driving growth in emerging markets, international start-ups and acquisitions. He also serves as Vice Chair of the Direct Marketing Association and is the past Chairman of the United Negro College Fund Advisory Board in Chicago.

"Joe Lawler has led major growth initiatives on a global scale, " said David S. Wetherell, Chairman of the Board of CMGI. "His experience in understanding customer needs and delivering integrated solutions for global organizations makes him the ideal leader for CMGI. This change is consistent with our vision for CMGI and our desire to build on CMGI's industry-leading global supply chain management, distribution and fulfillment capabilities, as well as leverage our venture holdings, tax attributes and cash position to enhance and create shareholder value."

Lawler, 54, a New England native, assumes his new position immediately. Mr. Lawler also has been elected as a member of the Board of Directors, replacing Mr. McMillan.

"I'm excited about the global focus of CMGI's brands, businesses and customer-focused services," said Lawler, "and this opportunity to return to my Massachusetts roots."

"George joined CMGI at a critical time," said Wetherell. "As CFO, and later as President and CEO, he oversaw the rationalizing and repositioning of CMGI. He leaves us with his work completed and with great appreciation and thanks from the Board of Directors."

George McMillan said, "I'm extremely proud of the work that my team and I accomplished over my three plus years at CMGI. I leave the company financially stronger than I found it when I joined in 2001, and with a stable business foundation on which to grow. I wish Joe great success as he leads the company forward."