I been trying out facebook ads, so far i only have 6 subscribers, I think it's working. I been doing automatic cpm, and sending to my weight loss page. There is a link where they download my free ebook to opt in. I'm just not sure what offers converts best with facebook people. I'm not gonna bug them, or give the wrong advice. Just legit offers & give free content. Btw my ctr is 0.461, 55 clicks, 63 likes, and 12.84 bucks spent so far. I don't know if it's good or not.