i wonder how ping me belongs with the "jokers". seeing that i can picture many people like me using ping me all the time, but having never heard the term arpu

i wonder how ping me belongs with the "jokers". seeing that i can picture many people like me using ping me all the time, but having never heard the term arpu for those like me who needed to google it http://www.playerize.com/blog/sticky-games-relationship-between-mau-dau-and-arpu http://www.playerize.com/blog/sticky-games-relationship-betw...