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By Michael Byrne
As the world turned to CNN last April to watch the unfolding of the harrowing events at Virginia Tech, a tidal wave of information seekers turned to new and ubiquitous methods of getting more than traditional media can ever hope. Like tens of thousands of others around the world, Michael Byrne, co-author of this article, and his family logged on to Facebook.com to check on a friend who attended Tech, only to discover she had 400 unanswered messages, an early indication of her murder that day.