I have learned in college that in order to get an accurate poll of what a population thinks about a political issue, then you must take a random sample. The sample cannot discriminate against things like race, economic status, job title, etc. The sample must also be taken from a very broad audience you can't just select people from one city or state.
Understanding this made me think about feedback wow gets. I believe that most the feedback on forums is bias. Forums is generally going to pull in 2 types of players the "fanboys" and "wow haters". There is rarely room for average players and they usually get yelled down by both groups because they are not on either side. I believe this is true on all world of warcraft forums not just mmo-champ.
So is this assumption correct? The logic of it seems to fit the case.