I view these occassions as a chance to educate.

I teach them that if you are an arse bad things will happen.

I've done this ever since my solo days. I won't start something, but if you start tagging my mobs I will return the favour.

My favourite was when I was farming motes of water in the lake outside shattrath. (I'm on a pve server so no pvp option).

This hunter is sending in his pet and firing a shot on any eel I'm swimming towards. 1st time Ithink Okay it's an accident, 2nd time I'm thinking I'll give the benefit of the doubt, third time It's time for payback.

I was on an affliction warlock - and had been farming very laid back, pulling one or two. when he started doing this I decided to ramp up my efforts, and just swam into large groups dotting the eels up. if you've ever done this on a lock you know you can pretty much sustain this farming as long as need be. The hunter might have stole a kill or two , but from that point on he was finding it difficult to find any eel, needless to say he left.