ShareThis tracked hour-by-hour sharing via e-mail, Twitter, and Facebook on February 11, 2001, the day Egypt’s Hosni Mubarek was tossed from power. Source: theatlantic.com Date: February 18, 2011 Link: http://www.theatlantic.com/technology/archive/2011/02/how-word-of-mubaraks-resignation-spread-on-social-media/71444/