Nice, clean colors. I like it. One thing though, if you view your site at 800x600 or lower, then your navbar links start using another line. I keep an eye on this kind of thing since about 46% of my visitors are set to this resolution. I know it's tough to deal with. Check out Dalan's drop-down menu hack. It's around here somewhere.
Also, I don't know what your users think, but I tried that flashing lightbulb thing with them once, and they just about skinned me.
I like the suggestion forum you have set up.

Do members get anything for donating money? You may want to think about that. It could help open some wallets.

I like your "Become a Moderator" link. I tinkered with this at my site but was going to have them fill out a form and then conduct an interview with them, but the idea didn't make it past congress (my moderators).
That's all I have for now. Keep up the good work!