Ian, I understand your reasoning for wanting to keep the site focused around recreational flying but if you, or the moderators, start moving "off topic" threads or posts to another site then you'd be introducing a form of censorship that I think many of us here would not welcome or appreciate.
I see this site as being somewhat analogous to free to air TV. There are 50 or so channels and thousands of programs available for me to watch if I want to. But owning a TV set does not require that I watch everything that is broadcast. Just as with this site, I can pick and choose, sample some, reject some. I follow some posters whose opinions I trust and respect and ignore or quickly pass over others I don't. Hell I can even turn the TV off, or not log in here for a while if the looney fringe has got me too riled. The great majority of us here are smart enough to be able to identify the trolls and agenda pushers and we can we can either ignore or discount their views as we see fit. We really don't need you or the Mods acting as our Mum and doing that for us. Australia has enough "nannies" making decisions for us, please don't fall into the trap of becoming yet another one.
To have someone else deciding what I can read is a retrograde step. I'm not yet in the nursing home and I am still capable of deciding what I want to follow and what I don't. Please don't take that freedom away from us. Save yourself some work and let the users do their own censoring.
That's my two cents worth but you can have it for free.