Jeralyn posted an update to her commenting rules. Since I use her policy for my site-I'll be adding this to it as well.
"Next, and this goes for all commenters regardless of your political philosophy: Lose the insults, the name-calling and degrading responses to other commenters. You may think you are being witty, I don't. Your comment must relate to the subject matter of the thread. If you want to introduce a topic, wait for an Open thread. Those are for readers to talk about what they want to talk about. ...read on