Internet And Technology Leaders Address Web 2.0 Summit 2011

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Twitter CEO Dick Costolo speaks during the 2011 Web 2.0 Summit on... News PhotoBusiness,California,Corporate Business,Dick Costolo,Finance,Horizontal,Internet,San Francisco - California,Talking,Technology,USAPhotographer Collection: Getty Images News 2011 Getty ImagesSAN FRANCISCO, CA - OCTOBER 17: Twitter CEO Dick Costolo speaks during the 2011 Web 2.0 Summit on October 17, 2011 in San Francisco, California. The 2011 Web 2.0 Summit features keynote addresses by Internet and technology leaders and runs through Wednesday. (Photo by Justin Sullivan/Getty Images)