This "reviews don't mean anything" notion is silly to me. Almost every film that has been trashed by critics did not end up getting a high grade from me. Transformers 2 and 3 and Green Lantern come to mind most recently.
Some people think it makes them intellectually superior to shun reviews and go against the masses.
I think it just makes dumb financial sense. I'm tired of dropping $20+ on garbage that they put no effort into.