I'm going to differ with you a bit, although I understand the sentiment.
I want fans of other teams to read this place. I want them to contribute. I'm fine if they want to disagree with what is said. It is easy for people in a bubble chamber to persuade themselves that they are right...it is useful to get outside opinion to keep from going off the deep end. In fact, I am convinced that the residents of a site I won;t name have gone of the deep end, largely because they drove away anyone who dared to disagree, and so now they say stupid things and everyone else nods in agreement. I don't want this place ever to become like that.
However, there's disagreement, when backed up by clam logic, and then there's ...other stuff. We have some visitors form other schools who contribute, and occasionally challenge us. That's healthy. We also have some visitors who try to stir things up, making claims with little to back it up, and those visitors don't usually last.