There's a nasty little adware going round compromising people's MSN accounts. BEWARE of ANY links anyone sends you, especially "laughed like hell.com". It WILL compromise your account and replicate itself. If you have been hit by it, put a warning on your MSN immediately, close the program, change your password and run some malware programmes.
I should have been more suspicious when my mother asked me if I was on Facebook and finished with three question marks, but these adwares are getting REALLY smart. No email in the webpage and looks a lot more legit. They VARY as well.