Sorry to say, but you can expect this all around, no matter what you do. If someone is vocal enough, and feels they can do the job you are better, they will always resort to name calling. Just the other day I was called a bad blm because I used Blizzard 2 vs 18 mobs at once over a single target bliz 3 simply because the other guy feels he can do blm better than me. There will always, and I do mean ALWAYS be those people in a game that's packed with thousand of other people that turn out to be complete jerks. Find a pack of friends and roll with them for content, that's your safest bet!