Simon Willison’s Weblog

RSS Duplicate Detection. “Detecting duplicate items in an RSS feed is something of a black art”. I hadn’t realised quite how involved such a basic function of an aggregator could be.

Posted 22nd January 2008 at 8:11 pm

Recent articles

GPT-5: Key characteristics, pricing and model card - 7th August 2025
OpenAI's new open weight (Apache 2) models are really good - 5th August 2025
ChatGPT agent's user-agent - 4th August 2025

aggregator 1 atom 26 blackart 1 duplicates 1 james-holderness 1 rss 40 syndication 9

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