President Barack Obama sits with Twitter co-founder and Executive Chairman Jack Dorsey during a "Twitter Town Hall" in the East Room of the White House in Washington, Wednesday, July 6, 2011. (AP ... more 
President Barack Obama sits with Twitter co-founder and Executive Chairman Jack Dorsey during a "Twitter Town Hall" in the East Room of the White House in Washington, Wednesday, July 6, 2011. (AP Photo/Charles Dharapak) less 
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Associated Press | Photo By Charles Dharapak
Wed, Jul 6, 2011 4:03 PM EDT