Check it out! Daniel Iacovelli, who runs the Video Game Summit in Chicago, let me know that he's running a homebrew high score competition called the Harmony Games.
The first game up is the amazing Donkey Kong VCS so grab your joysticks and get your name in the listings! You can check out the Harmony Game page or AtariAge forum thread in the links below for more information.
Harmony Games Highscore Listing: http://www.atari-video.club/?page_id=2