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WEB 2.0 SUMMIT — Facebook CEO Mark Zuckerberg has taken the stage at John Battelle and Tim O'Reilly's Web conference, and he's proved to be game for questions. Battelle, clearly expecting a nonresponse, asks Zuckerberg about his company's financing — the sale of a small stake that would value the company at as much as $15 billion. Instead, Zuckerberg gamely smiles and says, "Great. It's almost wrapped up." The crowd, a bit shocked, breaks into laughter. Battelle then asks about an IPO. Zuckerberg says, "Definitely years out." (Photo by AP/Paul Sakuma)