Facebook Holds Its Fourth f8 Developer Conference


Mark Zuckerberg, chief executive officer and founder of Facebook... News PhotoCalifornia,Chief Executive Officer,Computer Equipment,Facebook,Finance,Founder,Horizontal,Mark Zuckerberg,North America,San Francisco - California,Social Networking,Talking,Technology,The Americas,The Internet,USA,Web PagePhotographer Collection: Bloomberg 2011 BloombergMark Zuckerberg, chief executive officer and founder of Facebook Inc., speaks at Facebook's F8 developers conference in San Francisco, California, U.S., on Thursday, Sept. 22, 2011. Zuckerberg unveiled new features that will let users share music, movies and TV shows through the social network's website. Photographer: David Paul Morris/Bloomberg via Getty Images