Yeah I kind of loathe Facebook myself but I got quite a bit of traction today after posting links to my stories and reading/clapping articles for just like an hour. My reads jumped from 100 to 285 at this moment and they continue to grow, and it's undeniably a result of those Facebook groups, from what I can infer. I guess in the stats section you can see which amount of traffic is internal vs external, also giving you a clearer idea of where people are finding your articles from.