order:score is fine and all, but sometimes you want to order instead by the like-to-dislike ratio. Specifically, the formula would be (up_score + 1)/(up_score + down_score + 2). This formula prevents obscure posts with <10 likes from dominating the chart just because they have no dislikes. This is something pornhub gets horribly wrong.
What this value actually measures is the probability that you will upvote the post given that you decide to vote. 3blue1brown did a good video on this https://www.youtube.com/watch?v=8idr1WZ1A7Q
I coded up a little program in C that allows me to sort by approval, and the results are promising.