Hi! I thought it might be neat to start a list of art-sites around the net and what they are for (and whether or not they are pixel-art friendly too, I guess). So add what you know!

www.elfwood.com
non-juried art site for sci-fi, fantasy and fanart.
Pixel friendly.

www.epilogue.net
juried (heavily so) art site for sci-fi, fantasy, anime, and certain other types of art
not neccesarily pixel-friendly to the traditional pixel artist, but certain varieties may be accepted.