Go ahead, type in marketing, or finance, or philosoply, cooking, or even Buddah and you'll find wikipedia comes up on the first page (often in the number 1 position) on a Google search.
Ok...they say this is for the good because, well, it's the wisdom of crowds. (Although I question the wisdom of the people who vote to always pick the best politicians!) But I'm not convinced.
Are you as troubled as I?