I am an admin of a Facebook group that abruptly swelled to 500 members and is still growing. The group is about the Method of a popular Authority Figure. The Method is relatively simple to understand but a bit complex in its implementation, and I've stated in the rules that advice to the contrary of what Authority Figure teaches isn't allowed. However, there are several shades of gray and several areas open to interpretation. There are even instances where Authority Figure's advice deviates slightly from what Method is on its face when extraordinary circumstances present themselves.
As a result of the fact that there are nuances, I have tried not to "police" the group too much unless something is blatantly going against Authority Figure's advice or Method. But I've noticed that when I comment on a thread, it tends to be a conversation killer, or people just end up liking the comment and not saying anything else. I know that I'm not overly harsh and I don't say anything like "My word is law" or "This is the right answer, end of discussion" but I'm wondering if by commenting at all (even if it's just "my personal opinion is X," I'm implicitly saying "Question answered, shut it down, next topic."
I also wonder how much participation is actually appropriate for an admin. I probably comment on 1 in 15 posts when it's an opinion question or when the answer is a bright line rule from Method, just to show that I'm still there. I'm trying to walk a line between looming over everyone and seeming like I'm checked out and not paying attention. I'd love your thoughts if you have experience as an admin/mod, and particularly on Facebook where we're using our real identities.