Karl realises he has not moved on since his break-up with Zoe, but with Ruby and her boyfriend going through a difficult time, the scene is set for him to make his move.
A religion is a belief system with rituals. The missionary kopimistsamfundet is a religious group centered in Sweden who believe that copying and the sharing of information is the best and most beautiful that is. To have your information copied is a token of appreciation, that someone think you have done something good.