Adding friends

It would be so nice if you could add friends. Everytime you click on a movie, you immediately see the rating that your friends gave it (if they did rate it). It's such a nice way to start discussions and see how similar your taste is. If I'm hesitating about watching a movie and I see that my friends rated it highly, it increases the chance of me watching it a million times. I know I'm not the first with this idea but you can always try, right? :)