Comparing fans of movies
It would be helpful if you could compare groups of fans. This would be less useful for movies that most everyone agrees are good, and more for movies that are relatively controversial among fans. For instance, I really enjoyed the first Kick Ass, which was not everyone's cup of tea. Most of what I'm seeing about Kick Ass 2 is that it's not very good. If there was a way to look at who all liked Kick Ass, and then see whether they liked Kick Ass 2, that would make it easier to know whether a sequel (or a movie by the same director, etc.) is actually just bad, or whether the people who don't like it were never likely to like it.