Mark Zuckerberg is the co-founder and Chief Executive Officer of the social networking site Facebook. The success of Facebook made Zuckerberg a paper billionaire at the age of 24; Forbes ranked him in 2010 as the 35th richest American, putting the 26-year-old's wealth at nearly $7 billion. The details of how Mark Zuckerberg founded Facebook in 2004, while a student at Harvard, have been the subject of legal battles ever since between Zuckerberg and fellow students who claim a part (or more) in its beginnings. Zuckerberg's computer prowess isn't in question -- in high school he created an mp3 program that drew generous offers from Microsoft (which he turned down), and at Harvard he had a reputation for being a programming whiz. Whether it was Zuckerberg's idea or not, he did create the technical platform for what became Facebook. A few months later he left Harvard and secured funding in Silicon Valley, and by 2008 Zuckerberg was listed in Forbes as one of the 400 richest Americans. The story behind Facebook spawned a book, The Accidental Billionaires (2009, by Ben Mezrich), which became a David Fincher film, The Social Network (2010). Facebook had its initial public offering in May of 2012, giving Zuckerberg an estimated wealth of about $17 billion (not counting stock options) at the moment of the IPO.

Mark Zuckerberg married his longtime girlfriend, Priscilla Chan, in a ceremony at his Palo Alto home on 19 May 2012. She had finished medical school at the University of California, San Francisco a few days earlier. The couple met at Harvard University... Zuckerberg promised $100 million to New Jersey schools in September of 2010... Mark Zuckerberg was played by actor Jesse Eisenberg in The Social Network.