What do you run a jazz forum for? In the first place, for the love of the music, and if there's only a hint of a want to make a profit inclined, it will turn back on you someday. It's just as ridiculous as prohibiting links to other sites. (Of course rules to prevent links to porn sites etc. make sense.) We're still far from a free and tolerant world, if we don't turn the virtual world into one, who will?