Points is a social game for friends. The object of the game is to keep track of points and virtual money in the context of social groups.
It's fun to have an informal way to let people know how they're doing or if you like (or dislike) something they've done. Give your friends points for suggesting a movie you enjoyed. Take points away when they make a joke that falls flat. Give virtual money when someone takes you to lunch. Or, use Points however else you like.