I can't seem to get guests to stay... I have almost 50 signed up in less than a week.. but thats cuz they have to sign up to read the content
That little box floating around the screen on the right telling me I am unregistered is annoying. Allow people to view the content without registering. You might get more people interested in a topic and they will post.
That box is really annoying and isn't working, I think you should go for a lighter background, the site has a very dark feel to it. I like the design, it's looking sharp. You're almost there success!
I find the fonts a tad too small. Maybe that's what is driving visitors away. I like the color scheme though.
I like the design. I think you should try and make the fonts a little bigger cause it's kind of hard to see. The box where it said that you're not registered is extremely annoying since it seems like it's following you when you scroll down. Good luck with your forum!