Well no, they don't blog on fb. It is a group of collective bloggers from a multitude of platforms from all over the world. I created the group some years back as a place for them to share their blog links.
Ok, that's what I thought.
The group now has 25k members and I am making it my mission to get as many of them as I can over to #steem.
Wow, 25k is a lot. Go get 'em! (at least few) :D
You can also tell about the Steempress plugin for any Wordpress users.