On Wednesday, Facebook announced plans to start cracking down on links to "low-quality" web pages as part of the company's plan to show people "fewer misleading posts, and more informative posts." Facebook is starting with the ratio of ads to actual content; a page with too many ads and not enough original text or images is considered spam.
If a site's ads are "disruptive, shocking, or malicious," Facebook will make sure fewer people can see and click on it. The company continues to explain that the links aren't being banned; if you post one it will still appear on your wall but their news feed ranking will drop and they will be seen by far fewer people if anyone at all.
more at http://www.akelicious.com/2017/05/facebook-begins-crack-down-on-spam.html