you will experience a lot of this at lower levels. I believe many people probably try multiboxing and quit because of the sheer amount of people QQing around you, calling you names, threatening you, etc. You have to learn to ignore it.

When you're 70, you will automatically get less of it. People see you're 70, they know you've been around for a while. But you'll still get QQers. Things that help:

Be cool and patient to the ignorant people. Explain things even though it can be utterly redundant. Make macros that don't sound robotic but help you answer things easier. Just creating a good name and showing patience among people will help you in the future. I've had people that originally call me botter now cheer at me when they see me, just because I stopped and was friendly to them.

Be patient with battlegrounds. You'll get all kinds of pm's in there. Macro explanations really help. Eventually if you do it enough and if you're at least trying hard, you'll get people cheering you and saying cool things like "SWEET i'm in AV with [your name here]!"

You have to let it roll off.. you can't let it get to ya. If you feel you're starting to burn out a little, just PVE for a while in instances or roll a secondary team for PVE. You'll keep busy.