First of all, great site! It's using some really nice 2.0 features is seems and it's really fast.
However I have some idea's about the forums:
- maybe some color changes between the different topic is nice to use?
- the add new message button is maybe more clear at the right sight of the website. I mistake it every time for the topic title :D
Just a few small idea's I had. Maybe it's an improvement. Your may do whatever you want with it :d
Good suggestion about the 'new message' button. I will add it to my to do list. Thanks