90% of X's Community Notes Never Publish, Even Though Those That Do Suppress Viral Spread

Two 2025 studies found that 85–90% of proposed Community Notes on X fail the platform's consensus-rating threshold and never reach users. Yet a University of Washington study published September 2025 showed that notes which do clear that bar measurably reduce a post's engagement and viral potential. The bottleneck, not correction effectiveness, now constrains the system's impact on misleading content at scale.