@ Torillian
Agreed, IMO reviewers should really investigate and poll around for second opinions for example within the family.
Professional reviewers should write reviews based on intended target. A sports fan may not like an unrealistic party game, FPS, racing game, etc. Personally I don't like any MLB, NBA or American Football game, but of course I shouldn't give a game like that a bad score if I was a professional reviewer, I must compare to other similar games and assume the reader does like such a sports game. If I had to write a review for such a game I would ask fans what previous games made them so fun and such try to imagine what I would or wouldn't like if I was a fan.
Too often I get the feeling their approach is more like: I don't like the game, well that's my opinion and deal with it. That's a too simple, worthless and unprofessional approach. First and foremost there needs to be consistency, you cannot drag a game like R&C: TOD through the dirt claiming the game to have a weak story just after having praised Gears of War in the past. (Looking at Gamespot guys, R&C story telling is leagues above Gears!)