The ubiquitously annoying program, Twitter, finally has bragging rights to being useful: UC Berkeley graduate student, James Karl Buck, alerted his Twitter network to his arrest in Egypt, sparking an international campaign for his release. Buck was in Egypt doing a project on Egyptian bloggers who tend to be, according to The Mercury News "mostly leftist, anti-government bloggers." When photographing a demonstration, Buck and his translator, Mohammed Salah Ahmed Maree were both arrested. Buck sent......