Threadless is an online community of artists and an e-commerce website. The main ideas is that you submit your design ideas, then people vote for their favourites and the most popular ones get printed.
I used to get very excited about this and submitted all sorts of half-baked designs years ago. But recently I add my Iron Man tshirt that i’m a bit happier with because it’s a really over simplified concept.
At the point of writing this, it has 147 scores, 2 comments and three days to go to see if it makes it through the process to get printed.