According to Yahtzee, he fancies himself a game critic, rather than reviewer. Meaning, he has more akin with Roger Ebert than the automatons at IGN, Gamespot, and the like -- those of that ilk are actually game reviewers. If you are looking for a game review, seek that information elsewhere, as Yahtzee (I agree with his position) is a critic rather than a reviewer. There are videos on Youtube of him explaining the difference at a conference I believe in Australia in 2008.
His criticism is unique, which is what drives his popularity -- it's criticism in an entertaining package -- what could be better than that?