A term I hadn't heard before discovering the RPG scene on Google+ was "Gygaxian Democracy". People will crowd source material for D&D games from the masses, often with much success. Zak Smith seems to be the best at getting people out for these sorts of activities. Most recently, he crowd sourced dungeon room descriptions. His rules were simple: 8 words or less, don't try too hard to be clever. That's apparently all you need to end up with lots and lots of dungeon.
As I am known to do, I turned the whole exercise into a website. It keys random dungeons. Enjoy. This is the repository for the code that makes that all go.