Facebook hits 2 billion-user mark, doubling in size since 2012

Go back to Facebook hits 2 billion-user mark, doubling in size since 2012
Facebook (NYSE: FB) Delayed: 44.73 +0.08 (0.18%)
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(NYSE: SNAP) Delayed: 4.68 -0.02 (0.43%)
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Twitter, Inc. (NYSE: TWTR) Delayed: 53.70 --0 (-0%)
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