EXHIBIT 99.1

JOINT FILER INFORMATION

Name:

BankAmerica Investment Corporation

231 So. LaSalle Street

Chicago, IL 60679

Designated Filer:

Bank of America Corporation

Issuer and Ticker Symbol:

CMGI, Inc. (CMGI)

Date of Event Requiring Statement:

September 17, 2004

Signature:

BANKAMERICA INVESTMENT CORPORATION

 

By: /s/ Michael J. Denny__

Michael J. Denny

Attorney-in-Fact

   

Name:

Fleet National Bank

175 Federal Street, 10th Floor

Boston, MA 02110

Designated Filer:

Bank of America Corporation

Issuer and Ticker Symbol:

CMGI, Inc. (CMGI)

Date of Event Requiring Statement:

September 17, 2004

Signature:

FLEET NATIONAL BANK

 

By: /s/ Michael J. Denny_

Michael J. Denny

Attorney-in-Fact