# Nukebook > Measured market and site intelligence for founders and brands: search demand, AI-answer doors, public ad archives and site audits. Every figure carries a source and a pull date, or is labeled as an assumption. ## Core - [What a read contains](https://nukebook.io/): the product, in eight measured parts - [Field notes](https://nukebook.io/blog): every post carries 5+ sourced, dated figures by build rule ## Definitions with primary measurements - [What is Generative Engine Optimization](https://nukebook.io/blog/what-is-geo) - [AEO vs SEO vs GEO](https://nukebook.io/blog/aeo-vs-seo-vs-geo) - [What is AI visibility](https://nukebook.io/blog/what-is-ai-visibility) - [The GEO audit](https://nukebook.io/blog/geo-audit) - [The AI visibility audit](https://nukebook.io/blog/ai-visibility-audit) - [llms.txt, explained honestly](https://nukebook.io/blog/llms-txt) ## Measured benchmarks - [The state of AI answers in CPG snacks](https://nukebook.io/blog/state-of-ai-answers-cpg) - [Is SEO dead? Measured.](https://nukebook.io/blog/is-seo-dead)