There're hundreds of un-moderated Facebook groups to post ads. The clicks from the posts do convert if done right. I have posts in those groups that are actually shared and liked by members. Here're a few tips to drastically increase the traffic from those groups. 1. Choose the right groups: Post to the groups that have a new post every 10 minutes, instead of every minute. This could increase the clicks by 200%. 2. Use prominent, but not intruding color for text image: 20 posts won't get one click if you don't use images. You could get one click for every 5 posts for right images. The color of the images is what gets a post noticed and clicked. Blue and a few other colors usually work well. This will make 400% difference. 3. Choose the right time to post: The CTR difference between the best time and worst time is usually 300-500%. The tricky part is that the best time for user engagement is different for each group.