I'd shit bricks the day I saw a Super Bowl commercial for an internet message forum.
good thinking overall, though.
I've never been to the ESPN boards, but from what I hear about them, i'd steer clear. Quality over quantity.
another option, although i'm not sure if he'd consider it or not...but we can always try, try talking to bang at bang cartoons.
he always has advertisements at the beginning of his cartoons, a lot of which is for message forums.
It is a football related site primarily, so I don't know if that'd be the wisest course of action considering it's something that'd cost money, but it's an idea.