You use social networking sites. You even type back and forth to this one guy—and you might not like him too much at first. Then, out of the blue, you receive a message from this "friend" giving personal information that only you would know about. Kind of freaky, huh. What if he turns out to be your long-lost brother? TV producer Matthew Keys knows all about it. An online friend turned real-life brother, thanks to Twitter. Read the full article. (More Matthew Keys stories.)