I think the layout is spot on.. Easy to use Etc.
But one thing I would change is the availability of using Avatars/ signitures for non-members... I know that this is one of the perks of having a membership but I signed up last year and this is about the only thing that I got out of it..
Id happliy sign up for another year if there where a few more advantages!
I dont mean to start an arguement by the way