A place to post the pictures your color. :D Not just pictures in coloring books, pictures you draw on the computer, pictures you color from other sites, etc.
For the sake of loading time if your image is huge make a thumbnail or lj-cut it. This is only if your image is super big. Mmhmm.
If you don't want the whole world seeing your artwork, thats fine. Make it friends only and only members of the community can see. Also, if you don't want to be critiqued, make it to where no one can post comments.