Digital Impact Inc Watch

from SC 13D 1 page Exhibit 1 Joint Filing Agreement This Will Confirm the Agreement by and Between the Undersigned That the Schedule 13d Filed on or About This Date and Any Amendments Thereto With Respect to Beneficial Ownership by the Undersigned of Shares of Common Stock, Par Value $0.001 Per Share, of Digital Impact, Inc. Is Being Filed on Behalf of Each of the Undersigned Under the Securities Exchange Act of 1934, as Amended. This Agreement May Be Executed in Two or More Counterparts, Each of Which Shall Be Deemed an Original, but All of Which Together Shall Constitute One and the Same Instrument. Dated: April 4, 2005 Adam Merger Corporation By: /S/ Jerry C. Jones Name: Jerry C. Jones Title: Vice President/Assistant Secretary Acxiom Corporation By: /S/ Jerry C. Jones Name: Jerry C. Jones Title: Business Development/Legal Leader

from S-1/A ~20 pages Form of Underwriting Agreement