Well, as you get 20, 40, 60 karma you can edit different parts.. or CSS one

so i cant really do anything till i get 20 karma?

Well, not such what you can change, been a while

But I think you can CSS at any rank

sweet! how do i do that? there a place i can code in?

Edit (top right next to Profile)

aha! score ^^

sept i dono how to use it

There are help pages with sample.

yea, i see it