Facebook wants to minimize the amount of spam posts you see on your News Feed. The social network plans to block like-baiting, frequently circulated content, and spammy links. Like-baiting includes posts that say “like if you agree, share if you disagree, etc.” Frequently circulated content include statuses and photos that are continuously re-shared to try to generate engagement. And spammy links are those that mislead people into clicking on links that re-direct to questionable sites.
Soure: Facebook Newsroom