THE FAN-OUT EFFECT: WHAT HAPPENS BETWEEN A QUERY AND A CITATION

Summary from the TLDR Marketing newsletter

This analysis examines how ChatGPT selects and cites web pages by mapping the full retrieval pipeline across thousands of queries and pages. Retrieval rank is the strongest signal, with position 1 reaching a 58% citation rate versus 14% at position 10. Heading alignment is the top on-page factor, with strong query matches cited 41% of the time versus 29% for weaker matches. Focused pages perform better than exhaustive ones, with 26-50% fanout coverage outperforming full coverage when relevance is held constant. Domain authority and backlinks show no positive impact and are slightly negative, with citations driven more by retrieval position and content structure than traditional SEO authority.