chicagohh - 9:46 pm on Jun 1, 2010 (gmt 0)
My 3-step solution:
1. bring in a few more moderators
2. Allow links by members that have a certain post count + have been members over a specified period of time. If you wanted to go social you could include reputation in the mix, but then it gets more complicated.
3. All outgoing links require moderation.
I think it's clear that there needs to be some method of linking. Just how to best implement this is not yet clear. I tossed in my $0.02.