Maybe if someone wanted to still play chess, they would only be able to play unrated matches; maybe they could have a graphic next to their name or something? Because I have a feiling that you find the I.P. and we never hear from them again.
False, the I.P. can be comprimised, there are a number of programs available that will allow you to do this, My favourite is the one that changes/disguises your I.P. to a legitimate one, anywhere in the world every 3 mins.
I know of a couple of people on chess.com that have been booted for cheating & are now back in, they have changed, but mind you I will not waste my time playing them.
that was a beautiful comment the gave my attention to you