I think I've been the guilty party a couple of times, if only indirectly, and I'm seriously trying to change my wicked ways. I've gotten to where I can type out a lengthy, fiery, rebuttal, read it over, then delete the whole dang thing and move on. Life is too short to be et up over inconsequential things.
But I'm not completely healed. You'll notice I was unable to resist commenting on this particular subject.