Not really complaints so much as suggestions...
- The text box! IT BURNS. TOO BRIGHT. Why not have it black with grey text like the posts?
-At first, I couldn't tell the difference between quotes and the actual post, then I noticed the thin white line. Maybe have the quote box a dark grey? Something that stands out against the black, but still keeps in sync with the color palette.
-What happened to buttons for posting? Simple buttons can't take too much to load.
-When you scroll through avatars and themes, it takes forever! Maybe, instead of pressing the scroll button, you can simply jump to the page that the avatar is on? Numbered pages instead of those little lines. I see this becoming more and more a necessity than a suggestion as the number of avatars grows.
-The friends list page is odd. Is that still under construction? It's just a block of text.
That's all, really. Everything else is great.