In addition to that there are also mood-based questions that pops up everytime you seek a recommendation in which it will alter its algorithim to pick one that will suit your current mood. I like this feature as mood greatly affects a person's viewing pleasure - there will be times where critically-acclaimed powerful depressing films would have to make way for some mindless popcorn flick.
So far it has been pretty accurate in getting a sense of my tastes - no recommendations like Behind the Green Door or Boys in the Sand yet. Do try it!