Anyone remember the site YMDb?
This must have been at least 15 years ago, but there was a site called YMDb (Your Movie Database) where users could compile a list of their personal Top 20 Films. There was some weighted scoring system based on the placement of each movie in each user's list that would determine the consensus "Favorite Movies" of all users (similar to IMDb Top 250).
It was easy to add/remove movies from your personal list, or simply readjust their order. You could also check out other users’ lists and rate/comment on them.
It was nice because other lists that were similar to your own would be automatically presented to you, so it was a great way of finding people with similar tastes in film and getting "personalized" recommendations for movies you hadn’t seen.
Not sure what made me think of this after all these years, but I just looked into it and apparently the site is no longer around. Too bad--I remember having a lot of fun there and discovering some great films I otherwise probably would not have.