I thought i had already posted about my forums, but either it was before the split or i am getting Senile Blogs and so on, you can even get your own email address
If Star Trek is not your thing, or a larger site is intimidating, then my General Sci-fi forum might be up your street: http://krillmeed.com/scififorum/portal.php smaller in size but lots of fun.
It will only take seconds to register, but it will give you a friend for life <img>