Nathan,
To be honest, I don't like the new forum format. The previous format is the way I like my forums. I find this one to be a bit confusing to the eye. I will say this, at least you didn't go to a threaded format. For that, I would have been looking for my pitchfork and torch.
Also, where did the archives go?
And another thing, where did the ability to format your posts go? What, no italics? No font colors?
Yeah, I really do miss all the glowy colors and whatnot.
And another gripe. I liked the stories in the forum format. This click to read more is annoying. I also, liked being able to scroll down to see comments. Also, the automatic titling of replies. That annoys me too.
Do you like anything about the new site? ;P
And just for discussion: How is the "read more" any different than the forum where you had to click on the post title to read the post? Once you read more all the comments are there.
TADA!!! 
I feel so big and expressive..........yeah!!!!! 
Yeah, baby!
Oh, fancy

It's a question of tastes, I guess. I'd prefer threaded posts: that'd make it easier (for me, at least) to follow what response matches with what post. Maybe it's because I "broke my teeth" (is that the right expression?) with mailing lists, Usenet news and BBS forums, and using a browser to read and post feels still a bit strange to me.