You heard it right. There is a community that only supports Ron Paul. The community is called "Paulville." This is not an online community but a real community. Overall we are seeing people moving to areas that fall in line with their own political beliefs. As a result people are not seeing the other side of a debate. If you are a conservative and live in a conservative town you will not be exposed to the democratic's viewpoint and therefore only confirming your own thoughts.
This has been a concern with the Web. As we are able to customize and control what we see and watch we can filter out any conflicting thoughts. The article I reference above shows how this is happening beyond cyberspace and in real life. I'm curious to see if this separates our nation even further.