DPChallenge - A Digital Photography Contest

Very cool photography site. They issue challenges with a very wide base ("everyday objects") and you have a timeline in which to take and submit a photo. The pictures are then voted on by the site members. The picture must be taken within that time frame, and you may have to provide proof (exif) if challenged. No photoshop filters allowed except for the standard levels corrections, so, no "arty" stuff allowed. They have a forum and camera guides, etc.

Maybe someday I'll get the guts to enter a picture and see what kind of feedback I get. There are some awesome pictures up there- I can see that some of these folks must be professionals, and most of them have real nice cameras. (Your camera is listed in your profile and with your picture.)