I understand what you are saying here "
Uh-uh. Please. No. Not unless you want to see thousands of 'me too' or 'great post' responses."
I have also seen forums that moderate that kind of thing. I am not sure if it is via a script,
or an actual moderator. I do think that it may be a good idea to allow urls after a certain number of posts, but it would have to be moderated "in person". I don't know what you guys/gals have in the way of time to do that, but if it were possible, I am for it!