The document discusses some basics of search engine optimization. It explains that early search engines crawled links between sites but faced scalability issues. It also notes search engines were easily spammed by sites trying to manipulate rankings. The document recommends including 1-2 keywords per page that make sense and provide value to users. It suggests using semantic markup like microformats and microdata to help search engines understand content. Additionally, it proposes including sub navigation, breadcrumbs, related posts and recommendations to provide additional context to users and search engines.