On February 11, 2011, Egyptian president Hosni Mubarak bowed to two weeks of nonviolent pressure and resigned from power. Tahrir Square in Cairo was where the real action was, but an Italian network analyst named André Panisson was watching the news unfold on Twitter. Over the next hour, he visualized the explosion of tweets and retweets as a network graph. The results are stunning to say the least (well for a geek at least).
Each dot corresponds to a user tweeting with the hashtag #jan25(the label that Twitterers used for Egypt-related posts). Every time another user retweeted one of those #jan25 posts, a line is drawn between them
From: Fast Co Design