Simon Willison’s Weblog

15th July 2009 - Link Blog

You should follow me on Twitter. Dustin Curtis did a simple A/B testing experiment on his blog and found that the text “you should follow me on Twitter” had the highest click-through rate—173% more effective than “I’m on Twitter”.

Posted 15th July 2009 at 10:43 am

Recent articles

Experimenting with Starlette 1.0 with Claude skills - 22nd March 2026
Profiling Hacker News users based on their comments - 21st March 2026
Thoughts on OpenAI acquiring Astral and uv/ruff/ty - 19th March 2026

This is a link post by Simon Willison, posted on 15th July 2009.

ab-testing 7 buckettesting 3 copy 3 dustin-curtis 1 twitter 161

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