Malicous porn sites, use a javascript to changes your profile. Its an all exclusive "MSN Member" worm.
First impression
I didnt believe this. Your profile is changed just by visiting a site? But (again) appearantly this is very true. If you (by accident) view a profile today (or one of the following days, that leads to a site like https://honeyhome.hotpage.net/.. you"ll be sorry later
How it works:
Lets say that the user with the email doesnt-excist@hotmail.com is infected. We are visiting his profile on a url like this "https://members.msn.com/doesnt-excist@hotmail.com".
The profile is filled in with some random info... nothing special. Nothing interesting. Oh there is a link to his homepage.
The badass site is https://honeyhome.hotpage.net/. It will attempt to change your profile