I've always disliked wikis, mainly because they seem silly and have a very annoying name. However, they really are a near-perfect solution for writing documentation, and as much as I want not to like them, I have to admit that they really do shine in this area. Aside from cool projects like Wikipedia, Wikimedia also has a really cool cookbook. I found this a few weeks ago, just as I was thinking that it would be cool to have a place to go and type information about ingredients, techniques, etc. It's really empty at the moment, so if you know anything about food or cooking, go over and add an entry or six.