Personal calibration pages launched earlier this year (see newspost section: https://news.manifold.markets/i/107444059/personal-calibration-scores).

At the end of the year, I'll try to get all people working on Manifold to take a Yes/No vote (they will be voting on features for similar markets, I'll ask them to include this feature). If the majority vote personal calibration as the most impactful new feature from 2023 this market will resolve YES. A split vote, or if they vote on other features but not this one, resolves NO (on the reasoning that if this had a chance of being the most impactful new feature, they would definitely vote on it).