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Communications of the ACM


Brave, New Social World

Egyptian protestors

A protestor's sign thanks the youth of Egypt and Facebook during the political unrest in Egypt in late January. The photo, by an NBC foreign correspondent, first appeared on Twitter.

Credit: Photo tweeted by Richard Engel NBC on Friday Jan 28, 2011

How three different individuals in three different countries — Brazil, Egypt, and Japan — use Facebook, Twitter, and other social-media tools.

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