Facebook needs to have <i>some</i> data about your preferences in order to filter effectively; the most direct interactions you can make that send this signal are liking, commenting and sharing[0]. The most directly observable result of those is that similar content to the one you &quot;approved&quot; will be shown much more often for some time. From my observations[1], Facebook seems to do some kind of an exponential filtering (think e^-x) - things similar (or from the same person) to those you liked will initially show up much more often, but their rate will quickly diminish. But then, if this was a good guess on Facebook&#x27;s part then you&#x27;re more likely to &quot;like&quot; some of those posts, which sustains the effect. Another example would be &quot;forgetting curves&quot;.<p>It may sound crude, but it is pretty effective. They make sure that you mostly see things you&#x27;re interested with, sprinkled with some other stuff - because a) you might find it important too, but they don&#x27;t know, and b) everyone changes their interests from time to time.<p>[0] - Yes, there&#x27;re options to signal &quot;please don&#x27;t show me this kind of stuff&quot; or &quot;don&#x27;t show me stuff from this person&quot;, but I use them so rarely I don&#x27;t really know if they work in any other way than just blacklisting the thing&#x2F;person you pointed out.<p>[1] - I&#x27;ve noticed this directly after liking a post under a fanpage I basically never interacted with. I suddenly saw their posts everyday. Then every other day. Then every few days. Another like, and they&#x27;re back to showing up daily for a while.