To be quite honest, it is pretty damn tedious having to PM one (of the two) super moderators to get a link cleared just so you can post it. I'm sick of hearing about people getting infractions, posts being flat out removed and other over the top criticisms for some harmless off site linking. You never see this on any other forum (or website for that matter) and why is that? Because these websites that are concerned about external links use better ways of handling the situation.
Sites such as MySpace and the World of Warcraft forums with vulnerable user bases now have "Remote Links Interceptors" which bring up a warning screen before the site is opened from their pages. Today I found a free forum product that allows the easy installation of one of these filters, and installed it on Zodiac Forums -- attached is a screenshot of the filter in action. Obviously links would still need to be visited and moderated, but this way there is no need what-so-ever to be this hounding over external linking. It took me literally 5 minutes to download, customize the XML file, upload and use.
Link to forum mod on Vbulletin site:
http://www.vbulletin.org/forum/showthread.php?t=128113