It encourages its users to share just about everything, but Facebook wants its bankers to keep mum about IPO details.
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One notable shareholder is artist David Choe, who got paid in stock now worth $200 million for painting Facebook's offices.
Now, besides inane status updates cluttering up your news feed, be prepared for ads too.
Will Circles and Huddles replace the News Feed? In this battle, a case could be made for either side.