Simon Willison’s Weblog

How Dopplr learns. Dopplr uses global and personal trip histories to disambiguate place names, and your friends’ schedules to help disambiguate dates in airline confirmation emails.

Posted 23rd July 2008 at 4:17 pm

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Introducing gisthost.github.io - 1st January 2026
2025: The year in LLMs - 31st December 2025
How Rob Pike got spammed with an AI slop "act of kindness" - 26th December 2025

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