AndyA - 5:35 pm on May 25, 2010 (gmt 0)
I'm not necessarily opposed to outside links, but I think perhaps they should be moderator approved to eliminate spam. Perhaps a ***LINK PENDING VERIFICATION BY MODERATOR*** message could appear in the post until the link is approved.
Might be a lot of extra work for moderators, though. Sometimes outside sites might be very helpful, I've found sites from time to time that offered information that would have been helpful to discussions here, but of course I couldn't mention them.