SAN FRANCISCO, CA - SEPTEMBER 22: Attendees mingle during the Facebook f8 conference on September 22, 2011 in San Francisco, California. Facebook CEO Mark Zuckerberg kicked off the conference ... more 
SAN FRANCISCO, CA - SEPTEMBER 22: Attendees mingle 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) less 
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Getty Images | Photo By Justin Sullivan / Getty Images
Thu, Sep 22, 2011 4:04 PM EDT