A contest to find hidden planets on the main site was run between September and October 2007.
All 9 icons are now live, clues may be given later.
The icons are all somewhere on the main site, they could be in a news story, on a biography, in an article, or even a mundane submit content page, they might even be in a profile ...
I've found 6 so far

The contest has now officially closed, sorry for the delay, all planets have been removed and our winner can be named.
The winner was Tom, he got all 9 planets in a very short amount of time, for 1 month (starting today) he has a purple username!
Wooo!
Purple is one of my favourite colours too.
