A really cool forum blackhatworld.com
If you’re looking for blackhat strategies and free downloads and such I highly recommend visiting blackhatworld.com. Not only is there an abundance of free information and downloads, but unlike wickedfire, and many other forums, there are very feel stodgy people or cliques. Everyone is really helpful. The only downside is that the forum is heavily moderated so most of your posts will be moderated before they are displayed, but I guess that helps keep the crap to a minimum.
Here are some other blackhat forums I recommend:
syndk8.net
criticalsecurity.net
sla.ckers.org