Thank you for responding Bonaccorso. My experience so far has been that I have not been cured once. It only steals aggro from mobs. I thought maybe it's because the cleric doesn't have a specialization yet; maybe when he reaches level 10 and makes it holy the AI will start using him as a healer...
I have searched a lot for a playerbots (not npcbots) command guide, but I can't find it. I play in Cata so the mop addonm doesn't work for me. Does anyone know where I can find it? Or at least, how to make my alts char bots healers heal me and not attack everything they see.