Most rating systems I have discovered rarely apply to my specific tastes or needs. More and more I follow specific reviewers or, more interestingly, individual review comments. I find one or two short reviews (without spoilers) to show what the reviewers deem important to them, giving their rating more qualitative weight, and therefore I can compare it better to my specific tastes. If I went off the average/median rating alone, I'd never find fresh, unique content.