Why "add friend" instead of "follow"
I am really confused about using "friends and followers" instead of "following and followers" and very curious about the thinking behind it. To me the English word "friend" should be a bidirectional relationship. Is there any one can explain it to me?
I like icehuli's idea of if you add someone, you're "FOLLOWING" them, if they add you then you have a "FOLLOWER", and then I'd add that if you follow each other then you're "FRIENDS."
Of course, to change that and add the third category would be more work for the people writing DuoLingo's code that can probably be better used for making other needed improvements.