Brian_Henderson

@brian_henderson

UI Developer/Design Creative, Amateur (pilot, video/photographer), STS-133/JPL NASATweepUp

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2 Billion users on @twitter? … Seems only 218 million (~10%) are active: http://is.gd/SrKyRF

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321 days ago

2 Billion users on ? … Seems only 218 million (~10%) are active: http://is.gd/SrKyRF

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