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April 4, 2012 07:23 am GMT
Original Link: http://feeds.mashable.com/~r/Mashable/~3/yHXO8I4xgXQ/
Compare Energy Use With Opower Facebook App
Social media platforms have motivated users to compete in a variety of ways, but can Facebook motivate users to battle with friends to earn the…Original Link: http://feeds.mashable.com/~r/Mashable/~3/yHXO8I4xgXQ/
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