Ahh, LL, the voice of reason. I have often wondered that very thought.
Although I am not a jw, I am a jw sympathizer. I can see thru the eyes of the ones I love that are still jws that they would never stay in the thread to read all the good reasonable posts made because they would be so offended by those threads that are aggressive that they would automatically pull out the persecution card and leave.
I agree with everyone that has said that respect is a big way to address the issue. However, it is difficult being the poster and the responder to a post, when you feel that you are personally being attacked. Religion is a passionate subject, it often causes the spirit to flare in defense of a matter.
But again, the medium we are using to post our thoughts can be easily misunderstood. It is a false medium, so how can we assure that what we write will be taken in the context it was meant. I don't think that is possible. Granted when there is an apparent all out attack there is no confusing the meaning of the text. However, I do think there have been times when I have read a post and someone else has read a post and we have taken it's meaning differently. So again, how do you prevent people from taking offense when no offense was meant. I don't know if that it is possible.