Well, apparently there is- here you can rate and review films you have seen, and, I’m guessing, you can also get suggestions based on your watchlist
letterboxd.com
Letterboxd • Your life in film
Letterboxd is a social platform for sharing your taste in film. Use it as a diary to record your opinion about films as you watch them, or just to keep track of films you’ve seen in the past. Rate, review and tag films as you add them. Find and follow your friends to see what they’re enjoying…
letterboxd.com