How it works
Search engine optimization (SEO) can be described in three words: readability, rating and popularity. Since SEO is a very large and complex subject, we choose here to make quite substantial simplification of the factors that control how your site ranks in the search results.
Readability is a measure of how easy it is for search engines to utilize the content available on a website. Readability is improved by proper programming, and that the different pages link to each other in a way that search engines can find them. A sitemap is another way to increase the site’s readability.
Rating means that each page should be interpreted and categorized by search engine. The text should be written and designed in such a way that the search engine knows what it is about. This way you get the page to show up in the search results that are relevant. Also links, both internal and external, have a major impact on how search engines evaluate your content. The linked text should contain the keywords that are relevant to, and is mentioned in text on, the landing page.
Popularity is measured mostly by means of links from other websites/domains. Greatly simplified, one link is a vote on your webpage. To complicate things further, not all links are equally valued. The more websites linking to the website that links to yours, the stronger vote it gives yours. A website that many others links to, will give yours more votes than a website that have few links. In other words, a fairly undemocratic voting system, websites are measured at different stages.