Search engine optimization. A term i investigated today.
It’s the process of affecting the visibility of a website/page in a search engine’s organic search results. As an Internet marketing strategy, SEO considers how search engines work, what people search for, the actual terms or keywords typed into search engines and which search engines are preferred by their targeted audience.
So basically web pages equipped with links to keywords/tags are all little fishes floating on the surface of the ocean. A big fishing net (Google) drops to catch all of them while ones without as many links to keywords sink down the bottom.