Yahoo! OpenIDs are the same for all RPs. I had assumed that Yahoo! would be using directed identity to provide a different OpenID for each user/site combination, to prevent correlation of accounts. I was incorrect; they’re just using it for easier sign-in, with the same auto-generated URL used for every site.
Recent articles
- How Rob Pike got spammed with an AI slop "act of kindness" - 26th December 2025
- A new way to extract detailed transcripts from Claude Code - 25th December 2025
- Cooking with Claude - 23rd December 2025