Those with the new IM program can now click on the Xbox tab and see all their Xbox Live friends. You can also click on a friend and go to their profile page.

We don't know if this feature will be added to MSN Messenger, but this is a good start. Unfortunately it only works for US and Japan passport accounts. Although other regions may have it, Microsoft do not guarantee it as it is up to each region to decide if they want to enable this feature or not.