What does Community Notes mean?
Community Notes are crowd-written fact-checks appended to posts on X.
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Platform term. Also written Birdwatch.
Where it comes from
Launched by Twitter as Birdwatch in 2021 and renamed Community Notes in 2022. Meta announced a similar model for its platforms in 2025.
How it is actually used
Notes only appear publicly when contributors who have historically disagreed both rate them helpful — the bridging requirement is the mechanism’s distinguishing feature and what makes it hard to brigade. Being noted is a meaningful reputational event: brands have had promotional claims annotated, and the note travels with the post everywhere it is shared.
Examples
- "that ad got community noted"
- "the note has more reach than the post"
- "community notes did their job"
Can a brand use it? Safe for brands
Safe to discuss. The practical lesson for a brand account is upstream: unverifiable claims in a post can be publicly annotated, and a note attached to your own marketing is far more damaging than the original claim was worth.
Related terms
Frequently Asked Questions
What are Community Notes?
Crowd-sourced context added beneath posts on X, written and rated by contributors.
How does a note get published?
It must be rated helpful by contributors who usually disagree with each other, which is designed to prevent one-sided brigading.
What happens if your post is noted?
The note displays with the post wherever it is seen. It cannot be removed by the author.
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