Do you have the credentials to prove it?
It doesn't matter where I go, forum or in game I run into people complaining about one thing or another that they think Blizzard has done wrong and how stupid or clueless they are. I'm not saying these people are are right or wrong. You all know the phrase "pic or it didn't happen", well along the same principals as this I would like to put out there "When you work for a company that is kicking Blizzards but in the field Blizzard specializes in, THEN I will be inclined to give your complaint merit".
Before you claim Blizzard is horrible at...
Patches/Glitches: Show me the work you have done on some other game to create and implement new patches or if you have never done work in this area at least name one game that releases the amount of new content that Warcraft gets without paying for it and does a better job of it.
Maintenance/Server Problems: Show me your credentials in network and computer hardware installation/maintenance. If you have no experience in this area then please SHOW me one game any where near the size of WoW and caters to 11 million people and does not have the problems Blizzard faces every day.
Class changes: Show me your experience in game testing and development. If you can not at least show that you have played all similar role classes during that content so you at least know which classes do better before complaining of a nerf.
Customer support/GMs: Reference your experience as an in game support rep or another game as large as WoW and is more accommodating or faster.
I am not saying the people who QQ are wrong or right. I am just saying if you are going to call Blizz on something then PLEASE have something to back it up or you really do not have any idea what you are talking about.
***NOTE: Apparently a large portion of you stop reading half way through sentences. I did not say you HAVE to be able to do what they do in order to criticize. I did however say if you are going to criticize them on some aspect then reference someone else that DOES face the same issues and does much better.***