"I have used crowdSPRING for many book cover designs. This site brings customers together with designers to create projects,. The site allows for various levels of privacy (chosen by user) to keep design concepts restricted to those that sign disclosure agreements, but open to those watching and collaborating on the design. The fee charged by crowdSPRING seems high, but the ease of use and the behind-the-scenes (legal) aspects are worth the money. I have not been disappointed with the multiple projects I've had designed."