Simon Willison’s Weblog

SXSW: Web App Autopsy. Conversion rates and revenue per customer for RegOnline, FeedBurner, Wufoo, and Blinksale.

Posted 13th March 2007 at 12:39 am

Recent articles

My Lethal Trifecta talk at the Bay Area AI Security Meetup - 9th August 2025
The surprise deprecation of GPT-4o for ChatGPT consumers - 8th August 2025
GPT-5: Key characteristics, pricing and model card - 7th August 2025

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