Weatherson mentioned that wikipedia could stand to have a bunch of informed people clean up or augment wikipedia philosophy articles. I agree. For instance, this article on metaphysics could certainly use a lot of help. Cleaning up and organizing the big broad category articles is one way to structure which smaller articles in each area are needed/need to be cleaned up, and allows for people to contribute without tons of experience. So, if you have some free time, and want to contribute, you should.