Facebook has announced a new feature called "Why am I seeing this post?" Which allows you to read about it Facebook already provides for ads. As well as seeing why a post has appeared, it also wants to give you control over how often you see posts like it in the future.
You can access the new option by using the drop-down menu in the top right of the post. Once opened, you'll be shown Facebook's logic for why you might want to see a post amount of times you've been interacting with the post author in the past, the types of posts you're about to interact with, and the overall popularity of the post itself.
The service's existing "Why I'm seeing this ad?"