Facebook CEO turns 28, IPO could be $100B gift

FILE - In this July 6, 2011 file photo, Facebook CEO Mark Zuckerberg smiles during an announcement at Facebook headquarters in Palo Alto, Calif. (AP Photo/Paul Sakuma, File)

May 14, 2012 8:13:24 AM PDT
He famously wears a hoodie, jeans and sneakers, and he was born the year Apple introduced the Macintosh. But Mark Zuckerberg is no boy-CEO.