67405 external_news 1308310495 1643055975 As nonstop rain pummeled metro Atlanta in mid-September, causing widespread flooding and an estimated $250 million in damages, residents kept informed as much through their online social networks as by traditional media. In an emergency situation, you find the social networks you've been building up on a daily basis, that sometimes seem like a waste of time, suddenly become very useful, said Amy Bruckman, associate professor in Interactive Computing.

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