I think Green Bastard is right but if you're looking to save the BBS and hope for the best then do as Shaw suggests.
Consistency in applying the rules kinda makes sense. If nigger can't be typed then redneck, chink, kike, faggot, etc. shouldn't be typed either. Not bringing this up to troll, but its a reason I haven't been visiting as much.. makes the BBS feel like just another PC zone on the net where double standards are enjoyed. The main draw of this BBS was that it had a certain amount of "free-for-all", usually in good spirit. That's been gone for some time now.
I also hadn't thought much of it, but now that it's been mentioned I do recall the hosts referring to the BBS as "full of trolls".. a place where the "kids can play in their sandbox", etc. Can't imagine many new listeners would be eager to sign up after hearing that.