I too lack a FB acct and really dont care to get one. But I have been hearing more and more people are using FB as a for sale portal.
Years ago, in our local vintage bike club one new-ish member showed up at a meeting and breathlessly explained he started a FaceBook page for our club, The apathy was palpable but sadly he lamented "It seems though nobody here has a FB acct" which was true. Now,, theres a lot of activity allegedly on that FB acct but I am told most of it is NonMembers as most of us are old relics.
I Would be interested in hearing more about this mysterious BSA motor though, do share!