I like Dann-O's idea.  Thinking about it, wouldn't it be possible for members to simply select the galleries they do want to see?  I'm imagining something like the forum page, where forums can be hidden and preferences for each member memorised.  If you could just check options about which galleries or genres you wanted to see that would be good.

So far as i see the whole Art Chart/Hot20 rating thing is complicated by the fact that there are people who will rate just about anything in the Poser gallery.
Thus I've ignored the Art Chart... and I don't really feel like I'm missing out on anything, since I still see huge amounts of incredible work by you guys when I look through the galleries.