On social media, the algorithm is the set of rules a computer uses to decide which posts and videos to show you, and in what order. It learns from what you watch, like, share, comment on and even pause on, and shows you more of what it predicts will keep you scrolling.
How it decides
Every time you open an app, there are far more posts than you could ever see. The app ranks them using signals such as:
- what you’ve watched to the end or scrolled past,
- what you liked, shared, saved or commented on,
- who you follow and interact with most,
- what’s popular with people similar to you.
Why it matters
Feeds are designed to hold your attention. That can mean more of the same topic, more outrage, or more extreme versions of something you looked at once. It can also make it seem like “everyone” believes something when you’re only seeing one slice.
What it means for you
You can steer it. The algorithm responds to what you do, so small actions change what you see over time.
Quick tips
- Use “Not interested,” “See less” or “Hide” on posts you don’t want.
- Many apps have a Following tab or feed that shows only accounts you chose.
- Unfollow or mute accounts that make you feel worse.
- Don’t rely on your feed for news; check a few trusted sources directly.
- For kids, use screen time limits and talk about why feeds feel endless.
Test yourself: play Safe or Risky?, a quick free game.