A few days ago, Dr. Rasha Abdulla, an expert on the role of the Internet in Egypt who teaches at the American University in Cairo (and who I'm pleased will be speaking at Personal Democracy Forum this June in New York), told me about a strange experience she had with her Facebook page during the height of the uprising against the Mubarak regime. A video of a defenseless Egyptian man being gunned down by police in Alexandria on January 28th, which she and others had tried to share on their Facebook pages, was mysteriously taken down without explanation during the heat of the protests. [Warning, this video is not for the faint of heart.] Then, a day later, it was back up...