Worth1000 is a community of mostly Photoshop users who use their skills to manipulate images for the respect of others, and possibly get cash prizes along the way. The site's been around since 2002 and has an avid, active user base of technology aficionados and people whom like creating and looking at well-done "photoshopping."
What makes the service especially great is the design. Each contest is set up like a forum thread. You can casually browse hundreds of photos in a sitting. In addition to photos, there are also contests for multimedia, and text writing that follows a similar format.
Worth1000 comes from the same folks who created Aviary, a small suite of Web applications for Web design and photo, audio, and video editing.
Winner: Worth 1000 (Worth1000)