It's official. Facebook is ridiculous. For just $240 million, Microsoft has secured a 1.6 percent stake (yes, there's a decimal point there) in the social networking site founded by Harvard dropout Mark Zuckerberg, the Harvard Crimson reports. That values the company at $15 billion and makes Zuckerberg, with his 20-percentstake, a $3 billion man. The deal ends a three-way fight over Facebook between the software giant and rivals Yahoo and Google and also blows away rumors that the Microsoft offer would value the company at a mere $10 billion. In other news, Zuckerberg has become the sexiest Harvard dropout since, well, Bill Gates.