Erm, folks 'moderating' a GB is as easy or as complex as you wish it to be.
If you want separate categories for any and every permutation of medium, do so,
if you want to keep it simple and have all media in one bucket, you can do that as
well. The setup is up to the moderator.
Realistically there aint' much innit and the time requirement is minimal, you
don't have to be
watching all-day, every-day.
I nominate Weaver.