CNN says, an American student who used a microblog site to free himself from an Egyptian jail is harnessing the Web’s power again — this time to demand the release of his translator. James Karl Buck was released from a Mahalla jail after sending a one-word blog post from his cell phone through the Twitter Web site. The message — “Arrested” — alerted all of his friends on the site of his detention. Twitter, a social-networking blog site, allows users to send status updates, or “tweets,” from cell phones, instant messaging services and Facebook in less than 140 characters. Read more.