I honestly think it's time to add another mod or two with banning privileges. It's hard for one man (and maybe brad since I'm sure he gets on occasionally) to handle the influx of spam that's plagued the boards. I think it'd make bob's job easier and a better experience for all if he had a mod or two for all the forums so we could have more moderator coverage.
It might also be time to examine how we allow new posters to sign up. The problem is we have to have a system where it's not too difficult for new referees and fans with questions to join, but not too difficult as to discourage people joining.