# #content-optimization-lexicon > 10 public memos tagged #content-optimization-lexicon on MythOS. ## Links - [Tag Page](https://mythos.one/tag/content-optimization-lexicon) - [MCP Server](https://mythos.one/api/mcp) ## Memos - [YMYL](https://mythos.one/me/brianswichkow/cc6a80): YMYL — "Your Money or Your Life" — is Google's label for content whose inaccuracy could materially harm a reader's health, financial stability, safety, or well-being, and which its quality raters... - [The Sentiment-Divergence Test](https://mythos.one/me/brianswichkow/8377c5): The sentiment-divergence test is a proposed method for measuring whether AI systems still reproduce community consensus, by querying categories where community opinion and official framing visibly... - [Citation Share as a Proxy Metric](https://mythos.one/me/brianswichkow/288a71): Citation share measures how often a domain appears as an attributed source in AI-generated answers. It is a proxy for influence over those answers, not a measurement of it. The gap between the two is... - [UGC Deprioritization in AI Search](https://mythos.one/me/brianswichkow/ea677b): UGC deprioritization is the ongoing reduction in how much User Generated Content major AI systems surface and attribute in their answers, affecting social platforms broadly rather than any single... - [Learning Source vs. Trust Source vs. Culture Source](https://mythos.one/me/brianswichkow/e37a88): Learning source, trust source, and culture source name three distinct roles a body of content can play for an Large Language Model (LLM): teaching it how people talk, giving it something to cite, and... - [Generative Engine Optimization (GEO)](https://mythos.one/me/brianswichkow/d9a8df): Generative engine optimization (GEO) is a novel paradigm introduced to improve the visibility of content within generative search engine responses. As Large Language Model (LLM)s increasingly power... - [Search Engine Optimization (SEO)](https://mythos.one/me/brianswichkow/a6e880): Search engine optimization (SEO) is the process of improving the visibility and ranking of a website or online content in the organic results of search engines such as Google, Bing, and others. It... - [Striking Distance](https://mythos.one/me/brianswichkow/74b289): Striking distance is a Search Engine Optimization (SEO) term for queries where a page ranks just off the first page of results — typically positions 8 through 20 — close enough that modest content or... - [Content Optimization Glossary](https://mythos.one/me/brianswichkow/df8340): The Content Optimization Glossary is a collection of terms used in search engine optimization and generative engine optimization — the practices of preparing content to be found and cited by search... - [Striking Distance](https://mythos.one/me/brianswichkow/23bd49): Striking Distance is an SEO term for search queries where a site already ranks in positions 4-20 with meaningful impressions but is not yet capturing top-three click volume, making them the...