When you sign up, you get a confirmation mail from Jim. If you get banned or suspended and disagree with it, you can mail him at that address using regular email.
Having worked as a moderator for a major network news chat site in the past, abusers often open 10 or more accounts at a time using the same IP, which is a red flag for trouble. Why not "smarten up" the software so it records when this happens, then follow up with the abuse coordinator at that particular IP when/if disruptive posts spew from those abused accounts?