are you tired of registering on a lot of diffent sites? would be great to have a single account, to log on different sites? that's - maybe - the idea of microsoft windows live id. you can log on with your windows live id (the same as microsoft messenger). you can put this registration thing on your homepage, so you don't need to do your own registration.

sounds nice? would be nice, but it doesn't work like that.

the registration (login/logout) can be done via windows live id, but its not possible to get information about this user. so, again, you have to ask the user to enter his information (name, email, etc) into a form on your page.

so, why to use windows live id? i don't know!