THIRD ADDENDUM TO ADCENTER LICENSE, HOSTING AND SUPPORT AGREEMENT

ADCENTER LICENSE, HOSTING AND SUPPORT AGREEMENT

This Third Addendum is entered into by and between IAC Search & Media, a Delaware corporation ("Partner") and LookSmart, Ltd., a Delaware corporation ("LookSmart") and is the third addendum to that certain AdCenter License, Hosting and Support Agreement by and between Partner and LookSmart entered into as of May 16, 2005, as amended by the parties in two addenda effective January 2006 and May 2006, respectively (the "Agreement").

This Third Addendum is effective as of January 1, 2007 (the "Third Addendum Effective Date").

Partner and LookSmart wish to extend the term of their relationship and amend certain terms and conditions of the Agreement. Therefore, for good and valuable consideration, the receipt and sufficiency of which is hereby acknowledged, Partner and LookSmart agree as follows:

1. Subscription Payment. Section 3a) is revised to delete the table and the text following it and replace it with the following:

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Confidential

*** Material in the exhibit marked with a "***" has been omitted pursuant to a request for confidential treatment filed with the Securities and Exchange Commission. Omitted portions have been filed separately with the Securities and Exchange Commission.

2. Term. The phrase "two years after the Version 1.0 Launch Date" in Section 8a) is deleted and replaced with the following: "December 31, 2009".

3. Termination. Section 8) c) is deleted in its entirety and replaced with the following: "8) c) Termination by Partner. Partner may terminate this Agreement by giving LookSmart not less than ninety (90) days’ prior written notice. Notwithstanding Partner’s right to terminate under this