Well that is what I am working on. Asking myself if what I have to say really contributes to the thread, hasn't already been said better, or is even what the poster wants to hear.
There I have been many threads that I started to reply to, and then changed my mind. My contribution would have been pointless bickering. I am striving for the stage where I can actually have empathy for the situation, but would be content just to be able to shake my head at the computer screen and go on.
But there are some things I feel strongly enough about that I will always put my feelings out there, no matter how mean they are. It would be dishonest of me not to - not dishonest to the DIS, but dishonest to myself. If someone makes a comment I find offensive, I really feel duty-bound to respond to it.
Now in the Dixie Chicks threads (one of them) I had a little mean-spirited fun at the expense of Ann Coulter. I was being mean. I suggested throwing things at her. My replies in that vein were mostly for the amusement of a couple other posters on that thread, and partly because I really loathe Ann Coulter and couldn't possibly pretend otherwise.