Another Brother, you are spot on about the critics and the need to differentiate, but I have to say (without being a critic) that when you read reviews you always look at the name of the critic and most of the times you know if he is on the same side of the fence. I know critics that have an opinion about everything but can not trust their opinion on blockbusters. On the other hand I trust their opinion on old movies and I am sure that what they like I will like too.
Saying things like "this film is boring" is not the words of a critic, but the words of a lazy, snobbish twat. And when I read them I just note his name in order to avoid him in the future.
By the way have you seen the movie "Network"?