Simon Willison’s Weblog

19th January 2008 - Link Blog

Yahoo! supporting OpenID 2.0 but not 1.1. Yahoo!’s Allen Tom outlines the reasons Yahoo! are supporting OpenID 2.0 but not OpenID 1.1.

Posted 19th January 2008 at 9:10 am

Recent articles

Is Claude Code going to cost $100/month? Probably not - it's all very confusing - 22nd April 2026
Where's the raccoon with the ham radio? (ChatGPT Images 2.0) - 21st April 2026
Changes in the system prompt between Claude Opus 4.6 and 4.7 - 18th April 2026

This is a link post by Simon Willison, posted on 19th January 2008.

allen-tom 1 openid 213 openid2 7 yahoo 107

Monthly briefing

Sponsor me for $10/month and get a curated email digest of the month's most important LLM developments.

Pay me to send you less!

Sponsor & subscribe