Cinemalist - a system of personal film recommendations

Cinemalist is a system of personal film recommendations. It is written in PHP, javascript python. Based on personal recommendations is the principle of collaborative data filtration. How does it work? The user evaluates the movies he has already watched and on the basis of his assessments, recommendations (colaborative principle) are formed. The system is integrated with SO. by networks. You can watch the movie activity of your friends.