When someone reponds like that i would normally ignore them. Takes to much time. But if someone really puts effort in getting me annoyed i'll get him annoyed aswell. =] Examples can be read above.

If someone doesn't reply negative to me when i'm questing somewhere i will pretty much always invite them if it's a kill X quest. So he doesn't take "my mobs" and i don't take "his mobs" /care about the loot, that has never been an issue. But it's so annoying when you're with a few people all not grouped trying to get kills for something. And all killing mobs solo. When running past someone who's killing something i will throw a heal x 4 / shock x 4 if it finishes the mob and doesn't keep me in combat or something else annoying(combat = no mount). Spreading positive energy FTW!

I'm pretty sure that you can't get reported for this, since i reported a player a few weeks ago who did this to me, but the GM said there was nothing he could do. He actually told me to do the same back to him, or something similar. I was like: wtf? So that's why i'm sure that that was what the GM said.