¹

The amounts set forth in this column include the shares of Class A common stock beneficially owned by each selling stockholder as of November 15, 2006 (including options that are currently exercisable or will become exercisable within sixty days thereof).

²

The amounts set forth in this column are the numbers of shares of Class A common stock that may be offered by each selling stockholder using this prospectus supplement. These amounts do not represent any other shares of our Class A common stock that the selling stockholders may own beneficially or otherwise.

³

Sequoia Capital XI, L.P., Sequoia Capital XI Principals Fund and Sequoia Technology Partners XI, which are identified as selling stockholders in the registration statement to which this prospectus supplement relates (collectively, “Sequoia Capital”), have informed us that they plan to distribute shares of Class A common stock to their investors and employees following the filing of this prospectus supplement. Those of such transferees that were made known to us based upon written representations from the selling stockholders are listed in this table.

⁴

During the last three years, Sequoia Capital has held a greater than 10% interest in Google Inc. Additionally, a managing member of Sequoia Capital, Michael J. Moritz, is a member of Google Inc.’s Board of Directors.

⁵

Unless otherwise

⁶

Gaurav Garg and Komal Shah as Trustees exercise dispositive power over the shares of Class A common stock being registered for resale in this prospectus supplement.

⁷

Mark Stevens as Trustee exercises dispositive power over the shares of Class A common stock being registered for resale in this prospectus supplement.

⁸

Mark D. Kvamme and Patricia M. Kvamme as Trustees exercise dispositive power over the shares of Class A common stock being registered for resale in this prospectus supplement.

⁹

Donald T. Valentine as Trustee exercises dispositive power over the shares of Class A common stock being registered for resale in this prospectus supplement.

¹⁰

Sameer K. Gandhi as Trustee exercises dispositive power over the shares of Class A common stock being registered for resale in this prospectus supplement.

¹¹

Elizabeth Koch as Trustee exercises dispositive power over the shares of Class A common stock being registered for resale in this prospectus supplement.

¹²

Robert Cohn and Martha Cohn as Trustees exercise dispositive power over the shares of Class A common stock being registered for resale in this prospectus supplement.

¹³

Nathaniel de Rothschild as Trustee to the Hollis Trusts exercises dispositive power over the shares of Class A common stock being registered for resale in this prospectus supplement.

¹⁴

Capital Management Services will donate its shares of Class A common stock being registered for resale in this prospectus supplement to the Capital Group Companies Charitable Foundation (“CGCCF”). Upon receipt, CGCCF will then sell the shares of Class A common stock. James M. Brown as Officer of CGCCF exercises dispositive power over the shares of Class A common stock being registered for resale in this prospectus supplement.

¹⁵

Christian D. Valentine as Trustee exercises dispositive power over the shares of Class A common stock being registered for resale in this prospectus supplement.

¹⁶

Hilary Ayn Valentine exercises dispositive power over the shares of Class A common stock being registered for resale in this prospectus supplement.

¹⁷

Mark Craford Valentine and Katherine Ann Valentine exercise dispositive power over the shares of Class A common stock being registered for resale in this prospectus supplement.

¹⁸

Mark Valentine as General Partner of Big Dog Partners exercises dispositive power over the shares of Class A common stock being registered for resale in this prospectus supplement.

¹⁹

Thomas F. Stephenson and Barbara Stephenson as Trustees exercise dispositive power over the shares of Class A common stock being registered for resale in this prospectus supplement.

²⁰

David Stanton, Benjamin Ball, Dipanjan Deb or Sanford Robertson, in their capacity as managers of Tyndall Investors, L.L.C., exercise dispositive power over the shares of Class A common stock being registered for resale in this prospectus supplement.

²¹

Quellos US Venture Capital Portfolio, a separate series of Quellos Private Capital 2002 (“Quellos US Venture”), will receive the shares of Class A common stock being registered for resale in this prospectus supplement as a distribution by Sequoia Capital XI, L.P. to its investors following the filing of this prospectus supplement. Quellos Private Capital Management, L.P. (“QPCM”) is the Investment Advisor for Quellos US Venture. Eugene J. McDonald as Chief Investment Officer of QPCM exercises dispositive power over the shares of Class A common stock being registered for resale in this prospectus supplement. Quellos US Venture is an affiliate of Quellos Fund Services, LLC, a registered broker-dealer. The shares of Class A common stock being registered for resale in this prospectus supplement were acquired in the ordinary course of business and at the time of the acquisition of the Class A common stock being registered for resale in this prospectus supplement, the selling stockholder did not have any agreements, understandings or arrangements with any other persons, either directly or indirectly, to dispose of the Class A common shares being registered for resale in this prospectus supplement.