What does it mean, when someone becomes a người hâm mộ of me?

It's fanpop's equivalent of a friend request.

depends on the user
some just obsessed of getting thêm number of fans
some wants to be friends
some add after seeing that bạn both have lots in common
some just add bạn and never get back LOL – Liên minh huyền thoại

Nothing. Everything will seem meaningless when we are in control! All your mortal những người hâm mộ will be irrelevant compared to the cá heo Council and their great rule! I'm kidding. It means potato.