It's not the money. Forums aren't expensive.
They most certainly are. Free ones that are hosted by various companies are riddled with ads.
He has already said that he likes the current forum software,
I've never read any post by him that indicated that. If you can point me to a post...
because it is basically up to the users to moderate themselves.
That concept doesn't work, no matter how much Dave wants to believe it. As long as there is NO active moderation is present, as in any contemporary message board, you will have problems. I see so many OT threads on Subtalk, it's silly.
Therefore, I advocate going to American Pig's Boarshevik
Edit - I don't mean to draw anyone away. I love these forums.