<a class="taxInlineTagLink" id="ORCRP006023" title="Facebook" href="/topic/business/technology-industry/facebook-ORCRP006023.topic">Facebook</a> Chief Operating Officer Sheryl Sandberg speaks at the start of a town hall meeting with US <a class="taxInlineTagLink" id="PEPLT007408" title="Barack Obama" href="/topic/politics/government/barack-obama-PEPLT007408.topic">President Barack Obama</a> April 20, 2011 at Facebook headquarters in Palo Alto, California.

( Mandel Ngan/Getty Images )

Facebook Chief Operating Officer Sheryl Sandberg speaks at the start of a town hall meeting with US President Barack Obama April 20, 2011 at Facebook headquarters in Palo Alto, California.

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