Research suggests YouTube’s “dislike” button isn’t doing what you want it to

A new study from Firefox developer Mozilla suggests that YouTube’s video moderation tools are ineffective because the website keeps recommending videos you’re not interested in.

The way it should work is that users have several tools to teach YouTube’s puzzling algorithm what they don’t want to see. You have options such as the Dislike button, the Don’t recommend channel option, and the ability to remove videos from your account’s history. But according to Mozilla’s study (opens in new tab), users still get these ‘bad recommendations’. At best, YouTube’s tools cut unwanted videos by almost half. At worst, YouTube does the opposite: it increases the number of unwanted videos you see.