Chances are you can find the answers to many of your inqueries here. I used to post on the old Forums, but can't get my name now on these forums. Display names on this forum are unique. If you had used Arcade in the past, try gaining access to the account by going to the GameSpyID site , typing in your e-mail address, and requesting it to send you your forgotten password. If it recognizes your e-mail address, you should be able to gain access to your old name.
Some people have custom icons and titles.
The boards are currently set to allow registered members to use custom icons and avatars after a certain number of posts. You can change your visible name on the boards at any time by going to your Profile. You can view the boards as a Guest without registering or logging in. Some boards may require that you register in order to post, though. All registrations are handled through GameSpy ID .