It looks good, it has nice features. It's really the first time I'm enjoying hanging out on a forum.
I had to use builtwith.com to find out it's Vanilla though. I think a little mention in the footer would be appropriate. This software kicks ass and I would be much more active on e.g. bitcointalk.org if the software there would be halfway as useful as this website.
Hope more communities will start using it. I definitely would use this if I were to start a forum myself.
Thanks for using it here!http://vanillaforums.org/