I can understand the notion that most of the Eagles fans posters appear to get offended easily on the board. The reality is with team success the EMB became rather popular. That and many Eagle fans like myself during the season would visit the opposition and then invite them back. For some posters for whatever reason they see that as an invasion. Why?? Beats me... but it happens.
But the eventual behaviour that you can find on the EMB is similiar to what you describe on the ESPN board. The Mods on the EMB are pretty quick to tone things down but they have allowed posters to call each other idiots and scum and whatever else. So most of us have grown a thick skin to it.
What I find myself doing is skipping past those posts and reading the thought out posts. I don't care if the poster is arguing a point that is completely the opposite of mine. So long as it is a discussion - I post to it. To me smack talk isn't cursing or name calling. It is just lively discussion - once a line gets crossed - I move on as do many of the better EMB posters.