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X CorpX expanded Community Notes globally as open-source crowdsourced fact-checking system

X expanded Community Notes (formerly Birdwatch) to all users globally in late 2022, allowing contributors to add context to potentially misleading posts. The system uses an open-source algorithm to surface notes that earn consensus across users with different viewpoints. By November 2023, the program had approximately 133,000 contributors and notes received tens of millions of views daily. A May 2024 study found COVID-19 vaccine notes were accurate 97% of the time.

Scoring Impact

TopicDirectionRelevanceContribution
Content Moderation+towardprimary+1.00
Corporate Transparency+towardsecondary+0.50
Misinformation-againstprimary+1.00
Open Source+towardsecondary+0.50
Overall incident score =+0.643

Score = avg(topic contributions) × significance (high ×1.5) × confidence (0.57)

Evidence (1 signal)

Confirms product_decision Dec 1, 2022 documented

X expanded Community Notes to all users globally with open-source algorithm

X expanded its Community Notes program (formerly Birdwatch) globally in late 2022, allowing users to add context to misleading posts via a crowdsourced system with an open-source algorithm. By November 2023, the program had 133,000 contributors. A May 2024 study found notes on COVID-19 vaccines were accurate 97% of the time.

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