Join us for a live blog of Mark Zuckerberg's opening keynote address from the 2014 Mobile World Congress on February 24 at noon EST.
Mark Zuckerberg's 2014 Mobile World Congress keynote
Mark Zuckerberg, Facebook's co-founder and chief executive during a Facebook press event in Menlo Park, California in this file photo taken April 4, 2013. REUTERS/Robert Galbraith/Files
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