Mark Zuckerberg — Person of the Year 2010

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Posing for photographer Schoeller are critical members of the Facebook staff: From left, Luke Shepard, manager of the platmobile or "platform for mobile" team; Jocelyn Goldfein, director of search, questions, and news feed teams; Neville Bowers, manager of the adface (a.k.a. ads front-end) team; Josh Wiseman, manager of the apps team (photos and profile are the main ones); Vladimir Federov, manager of the platform infrastructure team.

• 2011 TIME 100: Mark Zuckerberg