I am a relative newcomer with regards to actively participating on this forum. Given that stature, my comments may be inappropriate. I apologize in advance should anyone take them in that way.
Over the past several months I've noticed an increased frequency of posts that degenerate into personal attacks. Those that are familiar with internet forums know this behaviour most always stems from participation by "Trolls".
What some might not realize is how to best eliminate these disruptive folks. The guideline below in italics is taken from the blog at Gibson Research Corp, I feel it is worth considering. For a humorous look at types of Trolls have a look here:
Please DO NOT FEED the trolls:
Trolls post annoying and abusive messages in order to incite anger and in an attempt to force reactions. Difficult as it can be at times, PLEASE AVOID REPLYING TO ALL SUCH POSTS and thus feeding the trolls. Since trolls exist only for the attention they can generate, they will leave only — and always — when they are simply ignored.