What, no zombiehunters.org ? Lots of fun to lurk, rough around the edges, occasional good ideas. At least they don't take themselves too seriously.
Great site! I've been a member for years.
Only been there for a few months. Massively tounge in cheek at times and excellent fiction section.
Not a real active forum, but one of the saner (no black helicopters confiscating your cucumber garden) sites. I'm still looking for a good urban specific preparedness forum that doesn't spend half it's bandwidth of 5.56 vs 7.62 related threads.
http://www.intherabbithole.com/Not really a prepper website, but there's a fair amount of overlap.
http://edcforums.com/forum/