Simon Willison’s Weblog

Underscores are now word separators, proclaims Google. I missed this story last year—the change was announced by Matt Cutts at WordCamp 2007.

Posted 13th August 2008 at 1:06 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

google 372 hyphens 1 matt-cutts 2 seo 32 underscores 1 wordcamp 1 wordpress 20

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