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"Facebook passes 1.06 billion monthly active users, 680 million mobile users, and 618 million daily users"^^<http://www.w3.org/2001/XMLSchema#string>
<http://thenextweb.com/facebook/2013/01/30/facebook-passes-1-06-billion-monthly-active-users-680-million-mobile-users-and-618-million-daily-users/?awesm=tnw.to_h0bFb>