A simple thumbs up or down system is terrible, and their algorithms for matching are giving high matches for heaps of things I know I hate, and mediocre or poor matches for heaps of things I like.
I want to be able to look at a title and see what others have thought of it, an average rating out of 5 did this. Now I'm getting crap recommended with a 98% match that I know yesterday were rated 1 star and that I have read are terrible.
With this new system their algorithms dont know the difference between something you absolutely loved and something you thought was just OK - they are both just "thumbs up".
Awful system.
EDIT: and if the match is low or there is not enough data to calculate, it doesn't show a percentage. So how can you tell why something has no percentage? If it is because of a low match you would not want to watch, but if it is because of lack of data you might give it a try. But you can't tell!