What's the bottom end in your definition of small? Are you interested in rural areas as well? I currently live in a town of 1,400 and this is a question that I've been asking recently as well.
Cities are still pretty sexy places to do church plants. Nobody is talking about setting up an intentional community (or much of anything else) out here in the middle of nowhere.
I am new to this discussion, but I would love to see a plant where I am, also in the "middle of nowhere." The town I live near has under 1,000 people. There are other small towns near by. I miss being part of an anabaptist community. We left seattle to start an organic cattle ranch that also conserves fosil fuels, native plants and habitat, and water -- we planted the whole 200 acres to native, drought resistent grass. Any joiners out there? We would love to be a part of an anabaptist community!!! :)