99designs shows that crowdsourcing really works, especially for creative projects. I didn't have any idea what I wanted in a t-shirt design when I started, so going to one designer would have been fruitless. But because I was able to see many different designs from a lot of very talented designers, I was able to define what I was looking for and refine the final design with the person I chose. A very easy process with great results, at a remarkably reasonable price.