Gggrrrrr it makes my blod boil but I do not react to that term.
Luckily none of my hunters - they are my favorite class and I play 4 of them currently - have been refered to by that term. Yet I still bristle every time I hear it or see it in a post . . . .
That being said, I just ignore it most of the time as getting into an argument with someone with that view of Hunters is useless. Plus I just figure the person saying or writing it has just not met a well played Hunter.
I also know that well played Hunters are NEVER refered to that way and are in deed sought after for groups and instances.
Just too bad that Hunter is viewed as the easiest class to play so has more folk playing them then any other so draws many more 'bad' players just out for a free ride.