After having lost all neighbours from one of my accounts, I've been slowly going through members profiles searching out game codes. I was banging my head against the wall for some time until I realised that people still have wrong codes listed!! It would not usually get picked up because most of the time we look at sigs, but when you go to a members profile page, their personal details are listed at the top. Guess what?!? One of the details you may have entered when joining the forums was your game code!!! Long forgotten details, many who have updated their sig have not gone back and updated that piece of data as well. I suggest you go and check it out.
Cheers
Cheers