Simon Willison’s Weblog

Jeffrey Zeldman: XHTML WTF. Reading the comments, it’s scary how many people are totally ill-informed about HTML5 and XHTML5.

Posted 4th July 2009 at 1:22 am

Recent articles

How often do LLMs snitch? Recreating Theo's SnitchBench with LLM - 31st May 2025
Talking AI and jobs with Natasha Zouves for News Nation - 30th May 2025
Large Language Models can run tools in your terminal with LLM 0.26 - 27th May 2025

html5 83 xhtml5 2 jeffrey-zeldman 23 education 20 web-standards 45

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