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WEB 2.0 SUMMIT — On stage, Facebook CEO Mark Zuckerberg tells an audience of hundreds that his company is "happy" with its Microsoft relationship. That, of course, would be the relationship where Microsoft has exclusive control of Facebook's display-ad inventory — the relationship that Facebook, insiders say, is desperate to wriggle out of. There's only one logical reading of this response: Microsoft and Facebook have renegotiated their ad deal, allowing Facebook to sell its own ads in the U.S. — most likely in exchange for letting Microsoft take a stake in the company, shutting out Google and Yahoo. Could this really be the end of Facebook's big-money drama? (Photo by AP/Paul Sakuma)