Ten years ago we cited the Stanford Encyclopedia of Philosophy in our antithesis against communitarianiam, mainly as proof that it even existed. Their first entry for Communitarianism was added in 2001, and in 2002 most people were still telling us it wasn't a "real" philosophy. The reference to our work is at the bottom under "Other Internet Resources". It goes to Berit Kjos's reposting of one of my articles. But we're in the book, our "school of thought" officially exists.