Simon Willison’s Weblog

Deconstructing Facebook Beacon JavaScript. How Facebook’s new Beacon service (also known as “Facebook ruined Christmas”) actually works.

Posted 25th November 2007 at 9:20 pm

Recent articles

Phoenix.new is Fly's entry into the prompt-driven app development space - 23rd June 2025
Trying out the new Gemini 2.5 model family - 17th June 2025
The lethal trifecta for AI agents: private data, untrusted content, and external communication - 16th June 2025

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