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The Facebook Effect: A Churchill Club discussion [video]

At a Churchill Club event in Mountain View, Calif., All Things Digital's Kara Swisher talks to David Kirkpatrick, author of "The Facebook Effect," about why the company is now the No.

At a Churchill Club event in Mountain View, Calif., All Things Digital's Kara Swisher talks to David Kirkpatrick, author of "The Facebook Effect," about why the company is now the No. 1 social network. Kirkpatrick points to genuine identity and authentication, and a focus on technology as key factors for its success.