There is a new scam going on on Facebook right now, which involves you, your friends, and the yet to be released iPhone 5. Here is how it works. You see in your stream that one of your friends commented on an article titled "First Exposure: Apple iPhone 5." Because your friend commented on it and because you really want to know about this iPhone 5, you click on the link as well.
You are then directed to a domain ending in .info (that should be a bad sign in itself), where you are asked to enter a captcha code to prove you are human. That should really be a second warning that this is not so legit...