I agree that the Left is as quick to overgeneralize about the Right as vice-versa. As I've said before, I don't think Lefties and Righties are all that difference, except for their actual political opinions. At JoeUser, though, I think the fact that the conservatives have been more established and prominent has made it easier for them to stereotype the Left than it has been for liberals to do so to the Right.. Until recently, there were few enough on the Left that people on the Right could make these generalizations without anyone critquing their arguments -- meanwhile, bloggers on the Left haven't had that luxury. I think the increase in the number of liberal bloggers has changed this, which is one reason the discussions have grown more heated.