don't you have to go through hoops to get logged in if you aren't registered with MS for the actual beta?
when i try to login on my other email address, it says "The passport ID used to sign in is not allowed access to this Beta version of Messenger. 810003cc"
Retarded! I don't have any invites to send to my friends and until you click on the person you have no idea what their status is besides a gay shade of the little green dude.