This makes a lot of sense for a community site like DotNetKicks. Not only can the community build the content, but it can contribute to the actual feature set of the site as well!
Gavin has always been a bit progressive with this site, offering half of his AdSense revenue to those who submit stories (you have to configure your AdSense in your profile and DotNetKicks will show your AdSense ID 50% of the time).
I think this is a great idea and wish him much luck. I also look forward to being able to contribute a little bit here and there (donating heavily with code from Subtext of course).