Dealing with advertising and bots should be addressed, methinks. If you're not careful, you could get the board spammed by a bunch of advertisements in areas that shouldn't be advertised in - my suggestion would be dealing with these bots / advertisers immediately, probably through banning. Don't want the board flooded with links to places where you can (probably) illegaly buy medication!
EDIT: HAH. Just realized the irony of this. I didn't even know there was a suggestions board. FFFF -