Since folk clubs are essentially local, I do wonder what point there is in having a nationwide page

IMNSHO Fakebook is the wrong conduit. (And often wrong). Doesn't Goggle do things differently?

there are many listing sites like mine that are more geographically local. Freddy's site does a similar map based job.

I list as many listing sites as I can in the periphery of my area (see map &/or drop-down menus - or more on my list of listings) on my homepage. For the occasional foray into uncharted territory such a list of listings would be more useful, if it had more visibility (and someone willing to administer it).