AFK Leveling = Banned. New Unspoken rules Via Guide Drommund. Proof inside.

[Myth]

Pet should eat xp unless you do at least 1 damage. That means memming a level 1 spell and hitting the mob with it or meleeing for 1 pt of dmg. It requires the player to be in range of the mob and at their pc. If you must alt-tab. You start fight by nuking with a low level spell, sick pet, done.... 100% xp. There is no downside to this at all. Afk leveling will be impossible with this system and it has no detrimental effect to those that legitimately level with a pet.