But if they removed the account, couldn't he just make another one with same name?
Unless you're talking about a different punishment, like changing his avatar to one where the word "SCAM" appears.
So anyone receiving his messages would know he's not the real user.
GOG has said in the past that once a username has been used, it can't be re-used, even if that account is no longer active.
I don't mean inactive, I mean really removed, deleted by Gog's staff (when you send an e-mail asking for the removal of your account, for example).
If the username can never be used again, that's bad!
Imagine there's an user called Alex, and that user don't want to be part of Gog's user base anymore, why would they create a system that disables the username forever, after the account's removal?
Or let's pretend he/she decided to just change it to something else, but the previous username is still chained to his/her account, forbidding any Alex of planet Earth of using his/her real name.
Assigning an unique number to every Gog account instead of locking usernames, like some forums do, would be preferable, to me. If you can't be bothered to check the person contacting you to see if it's the legit account, before trading online, you deserve trouble, no offense.
Things wouldn't be so different, just check an user's avatar, username, registration date, and post history (like you should, already
), that's trying to trade with you. If both the name and image were plagiarized and he/she is emulating the way that user speaks, he/she is trying to fool you, get his/her username (and unique identification number) and report him/her.