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<http://gigaom.com/2013/02/25/mophies-new-juice-pack-air-is-heaver-than-helium-but-will-carry-you-farther/>
<http://gigaom.com/2013/02/25/mophies-new-juice-pack-air-is-heaver-than-helium-but-will-carry-you-farther/>