In my opinion, kids around 5-10 are allowed to watch the show. But i think that there should be a line from watching the show, to participating in the fan-dom. Kids under aged are allowed too, they just need to be mature. I myself is 13 and i feel a little too young to acually be here, but i still feel welcome since i´m mature. Being mature is the key to joining a good society, and making on and building one.