Upload & Sell: Off
It's worth noting that Leica users tend to fall into 2 distinct camps, rangefinder and SLR.
I can't speak for others but I have incredibly little interest in rangefinders, their glass, use etc etc. La la la, lost interest already...
However I'm sure I'm in the minority as any Leica specific forum is usually heavily biased towards range finders, see Photo.net, L-Camera, D-Preview Leica Talk, others...
I think theses days the term 'Leica' has become synonymous with M and rangefinders, understandably. I'm not averse to a separate 'rangefinder’ forum which would probably be ideal for those users and maybe there would be enough interest to keep that alive. But that wasn't the original poll question, however I wonder if that's what most people think it means.
TBH, I haven’t the slightest idea how a Leica lens on a Leica camera is Alternative anyway, or for that matter a Hasselblad lens on an Hasselblad body, a Contax lens on a Contax film body, etc etc. I always thought that Alt referred to using non OEM lenses, rather than referring globally to anything except Nikon/Nikon or Canon/Canon (lens/body). But that's probably why this forum is fairly busy as it has become a place where people talk about all kinds of relatively high end gear (optically), regardless of make.
There would be very little talk in a separate Leica R (SLR) forum, unless it was biased towards video. Don’t the video guys have all the good R glass these days?