Artsprojekt is sort of like Society6 meets Etsy, maybe? You can promote work, while also setting up a shop which you can put any image on shirts/hoodies/prints/skateboard decks/etc etc etc. Each item has a base price for which they produce it and then you set the markup for how much you get in return. You have to submit images to get approved, and they do hold shows and stuff.
Roguemonkworkshop Sort of like Threadless, but they also sell designs to retail outlets. If a design makes it through in voting, then the designer gets 10% of the wholesale price of each item sold.
Anyway, no idea if anyone's interested, but thought I'd pass along the word.
And since it has nothing to do with anything, here's a picture of a Corgi.