Facebook Holds Its Fourth f8 Developer Conference

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Mark Zuckerberg, chief executive officer and founder of Facebook... News PhotoCEO,California,Computer Equipment,Facebook,Finance,Founder,Internet,Mark Zuckerberg,North America,San Francisco - California,Social Networking,Talking,Technology,The Americas,USA,Vertical,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