Originally Posted by Xanatos903
It's not stalkers. It's who you interact with most often, essentially. Google "facebook orderedfriends" and you'll get a pretty good understanding of what it is.
It's influenced by you, and your actions only.
Pretty much, though it doesn't account just for your actions. Like you said, it adds up things like comments, messages, likes, whatever happens between you and that person. Basically a culmination of shared interaction. But to your point, if I understand the way it's calculated, your interactions toward other people are weighted more heavily than their interactions toward you.