RT @beEverywhere: #MileMa…
RT @beEverywhere: #MileMarker stat: Twitter reaches 500M users, 140M in the U.S. @venturebeat – http://t.co/nK5Eg9Qp
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RT @beEverywhere: #MileMarker stat: Twitter reaches 500M users, 140M in the U.S. @venturebeat – http://t.co/nK5Eg9Qp