Don't sign up for any COD6 Beta's. There is a site that looks official (microsoft) with signups, don't give it any information. My friend got his Live hacked, and credit info stolen. Be wary.
Hey I thought Infinity Ward dropped the CoD name and just kept it at "Modern Warfare 2" the sequel to CoD 4. I think this will be IWs best game because they want to prove they can do things on their own. But yeah back to the scam thanks for the heads up but people really shouldnt need a warning for stuff like this. Check the official game site before you sign-up for something on another one.
There's also emails being sent for the beta, so if you get an email about the beta don't open it, just delete it.