A visualization project displays 37,500 crowd-sourced border drawings overlaid on a world map, showing how people remember country boundaries compared to actual outlines. The interactive map breaks down submissions by land borders, coastlines, and daily contributions.
YouTube auto-extracts three frames per video that remain largely unused. DeArrow, a crowdsourced database by the SponsorBlock author, replaces clickbait titles and thumbnails with community-vetted alternatives, offering privacy-respecting integration through hash-prefix API endpoints and efficient batch processing.
Birthed is a daily website and iPhone app that aggregates what mattered on each calendar date—news, births, and cultural milestones—allowing users to vote with three buzzes before the hive locks at midnight. It stores no user accounts, ads, or analytics, with privacy-first design and immutable records after each day closes.
Reddit's 2017 Place experiment gave users a blank canvas where they could place colored pixels with minimal rules. Over 72 hours, millions of anonymous users collaborated to create complex artwork, though the process revealed tensions between creative freedom and the need for coordination to prevent chaos and maintain artistic integrity.