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Why can't Reddit detect content that you've already seen so you don't see the same thing across multiple subreddits? (Or reposts in a certain amount of time)
From r/Lightbulb · originally by u/Batchet · August 23, 2025
I probably shouldn't have subscribed to so many similar subreddits but it seems like it would be fairly simple to program Reddit to avoid repeating content.
Why isn't that an option? Is there a better Reddit app that does this?
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They could, but that would mean a few fractions of a percentage of fewer people will have to scroll past the ads Reddit uses to keep the lights on. So there’s not only no money in solving the problem, there’s actually money in letting it exist. This is a good example of what’s commonly known as a dark pattern.
Check out the preferences page. There's an option to show/hide "links" that you've already viewed.