vintagesnaps - Admin do post however a few of the old Admin are no longer with us. Chase in fact isn't just an admin he's the original creator and owner of the site itself, however he's since moved onto other waters and the site is now owned as part of a group of forums under new owners. They are not photographers as such (I think there are one or two in the team that they have at least, I seem to recall one coder is a former working photographer) however they do take care of the sites background running on the tech and advertising front. We do have Teri who has been an admin for ages and is a photographer as well.
Mods are the front line as we are mostly just promoted users so we are active photographers (both working and amateur) and we take care of most of the day to day running of the community side to the site. Threads that get derailed or go off track are a problem on any forum and its important to note that many times they will go off track very fast - a thread that was a few posts can suddenly become a very heated argument in a matter of moments between members. As a result mods can miss things - increasing the team size can help up to a point, but we don't want too many mods otherwise we end up falling over each other in the background as we respond to things.
At the moment we generally feel we've enough mods to run the site plus a few extra in case mods get pulled away without warning.