Facebook Holds Its Fourth f8 Developer Conference

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Facebook CEO Mark Zuckerberg delivers a keynote address during the... Foto di attualitàAffari,Arte, Cultura e Spettacolo,California,Celebrità,Composizione orizzontale,Conferenza,Discorso,Discorso programmatico,Facebook,Facebook f8,Finanza,Mark Zuckerberg,Oratore pubblico,Organizzazioni aziendali,San Francisco - California,Social network,Stati Uniti d'America,TecnologiaPhotographer Collection: Getty Images News 2011 Getty ImagesSAN FRANCISCO, CA - SEPTEMBER 22: Facebook CEO Mark Zuckerberg delivers a keynote address during the Facebook f8 conference on September 22, 2011 in San Francisco, California. Facebook CEO Mark Zuckerberg kicked off the conference introducing a Timeline feature to the popular social network. (Photo by Justin Sullivan/Getty Images)