Simon Willison’s Weblog

Hack Day at the Guardian. Video of the demos from the first Hack Day at the Guardian. I presented a crowdsourcing app I used to collect annotations for an SVG map of the UK.

Posted 18th November 2008 at 5:58 pm

Recent articles

OpenAI are quietly adopting skills, now available in ChatGPT and Codex CLI - 12th December 2025
GPT-5.2 - 11th December 2025
Useful patterns for building HTML tools - 10th December 2025

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