It's not a posting, Bob. It is a link to a Facebook group for people who are interested in sharing videos of music and other items of interest related to the area of Virginia included along "the Crooked Road."   Having skimmed through the page, it is actually a bit broader than just the Crooked Road.

You could not know this, not having participated in Facebook, but groups focusing on particular areas of interest are not uncommon, and there are many groups on Facebook that center on different kinds of music or culture or folklore. They are not scholarly groups, though among the music groups to which I belong on Facebook, there are often very knowledgeable or well-known people who participate. Also a lot of dumb hicks like me who enjoy the opportunity to both listen and contribute links to related music and artists. Facebook is not designed to be an organized archive of anything.

Some Facebook music groups are administered by musicologists, but they are not, and are not intended to be anything other than a place for people with common interests to network and share music videos or links to related articles or histories. Also, rarely are they intended only for "experts and scholars" to contribute. I think of them as "fan clubs" built around particular kinds of music rather than fan clubs built around particular musicians.

I will say that when I clicked the link I did not notice it was a Facebook link, and based on the opening sentence by the op, expected to land on a scholarly archival site rather than a Facebook group.

Mudcafe.org is a different phenomena, functions differently and serves a somewhat different purpose than do Music groups on Facebook.

I can understand that such groups might hold no interest to you. that is fine and your choice. From what I know of you here on Mudcat I doubt you would have much interest in them. That is not because you have any claim to higher personal standards than those of us who do use Facebook, however.