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How does Facebook decide what shows up in
your news feed?
Over a billion people look at their Facebook news feed every day, and
Americans spend almost as much time on Facebook as they do interacting
face-to-face with other people. [154] Because it draws so many eyeballs, the
news feed has tremendous power. The news feed can influence our mood, put
us in an ideological echo chambers, [155] or even influence who we’re going to
vote for. [156] In short, what appears in your news feed matters. So how does
Facebook design what to show in your news feed?
A simplified explanation of Facebook’s news feed algorithm. Source:
TechCrunch [157]
More specifically, how does Facebook take the hundreds (or thousands) of
updates you get every day and sort them for you? Like Google, it uses an
algorithm to figure out what’s most important. There are about 100,000
personalized factors, but we’ll focus on four key ones. [158]
The first factor is who posted it. Facebook will show you more posts from
people you’ve interacted with more (e.g. people you’ve messaged more or
tagged more), assuming that you’re more likely to engage with their future
posts.
Second is the post’s quality. The more people have engaged (e.g. liked or