Compare ratings with friends?

Me and some friends are using a site called filmaffinity.com for comparing movies we see. If i search up a movie and my friend have seen it and rated it you can see the rating he gave. If more friends have seen it you will see a average rating of that movie. This would have been a great thing on IMDB because i love IMDB it is the best movie info site on the internet. But should be more things to do with friends there like this and other things. If this was here i would not need another site for this.