After almost a decade of watching the Facebook phenom, this blogger has come up with a few theories. Probably bunk but here goes: First, that the people who repost stuff are interested that sort of stuff (... probably already known to FB and others) but here's the interesting part. People who are active like that on FB probably are interested and would like to know more - assuming it doesn't take too much reading. Tho it seems they may invest a bit more time in watching vids on the subject tho.
And while the root cause is not our concern we want to take advantage of the scenario - but, Big but, we don't know how to make videos. What then to do? We could hire moviemakers but if we had had that kind of money then we'd be able to pay to fix the problem we wanted to address anyway. We could possible ask those same enjoyers-of-videos to supply some of their own for us to use. Then again, some of us tried that - and failed.
What about contributory content schemes? Not videos,where interested parties may suggest (in this example) one or more points for inclusion into a joint article. Could do. One process - and this just a suggestion, will ask Facebook users to like or not like some topics. Since topics can be recurring, not being liked doesn't mean its lost for good.
So a particular topic is eventually chosen by the online community. Person who posted the list of idea opens a Facebook group - with a single topic, just the 'liked' one. If this groups gets active - and it should, because the process to arrive at the group's formation is driven by consensus, concern and probably, curiousity.