Common Notes, 'Community Notes for everything,' gets its own note on Scott Alexander's blog
NathanpmYoung · x · 2026-10-24
Common Notes by Goodheart Labs — 'Twitter Community Notes, but for everything' — got mentioned by Scott Alexander in an ACX open thread. The system combines AI-written notes (most notes), user-written notes and helpfulness votes, and a browser extension that surfaces notes on any webpage. Someone promptly added a cheeky note to the blog itself: 'It's true: the ACX blog can include notes, as can any Substack post' — 8 people found it helpful, a self-referential moment for the product.
Related event: Common Notes Brings Community Fact-checking to Any Article or Video(2 posts)→
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