I've only gotten 2 bad PMs since I've started playing. The first was from RTMoose when I bombed his tiger, and rocket'd his M16. A few nasty words were said, but I gave him a <S> for the kills.
The second one I can't remember who it was from, but I was RTB in a Spit 8 with a ful leak and little ammo left. And La-7 kept coming in at high speeds trying to kill me, and I'd just turn into him and cause an overshoot. Then he would run away as I got on his six, and come back at me as I broke to go back home. This went on for 5-6 overshoots. Then I decided I had enough of this. I only had 6 mins of fuel left and I need to get back to land my kills. I chased him, broke, and as he turned to make another attempt to kill me I turned into him and was the first to get nose-to-plane. I killed him and got a PM that I was a "HOing dweeb!". I asked how it was a HO when his nose wasn't even aimed towards me yet? After a few minutes of silence he did appologize for his outburst and said that I just got him at the wrong time.