AMENDMENT NO. 1 TO THE LIMITED LIABILITY COMPANY AGREEMENT OF @VENTURES V, LLC

EXHIBIT 10.3

AMENDMENT NO. 1 TO THE

LIMITED LIABILITY COMPANY AGREEMENT OF

@VENTURES V, LLC

This Amendment No. 1 to the Limited Liability Company Agreement of @Ventures V, LLC dated as of April 29, 2005, amends that certain Limited Liability Company agreement of @Ventures V, LLC dated May 14, 2004 (the “Agreement”) and is by and among the persons whose signatures appear below, each of whom is a Managing Member or an Associate Member.

Whereas, on April 22, 2005, Modus Media, Inc., a wholly-owned subsidiary of CMGI, Inc., sold to the LLC its equity interest in Open Channel Solutions, Inc. (“OCS”); and

Whereas, the parties hereto intend for OCS to be a Portfolio Company, and for the Percentage Interest of each Member with respect to OCS to be lower than the Percentage Interests set forth on Schedule A to the Agreement;

Now, therefore, for good and valuable consideration, the receipt and sufficiency of which are hereby acknowledged, and in consideration of the agreements hereinafter set forth, the parties hereby agree as follows:

IN WITNESS WHEREOF, the Members have signed and sworn to this Amendment No. 1 under penalties of perjury as of the date first written above.