FILE- In this Thursday, March 20, photo, Facebook CEO Mark Zuckerberg speaks at Facebook headquarters in Menlo Park, Calif. A research firm expects Facebook’s mobile ad revenue to soar this year, ... more 
FILE- In this Thursday, March 20, photo, Facebook CEO Mark Zuckerberg speaks at Facebook headquarters in Menlo Park, Calif. A research firm expects Facebook’s mobile ad revenue to soar this year, hitting nearly $1 billion a year after the company started to splice ads into its users’ mobile phones and tablets. (AP Photo/Jeff Chiu) less 
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Associated Press | Photo By Jeff Chiu
Wed, Apr 3, 2013 6:34 PM EDT