If you have a web site, then you want to be listed high in a search engine. Google uses a formula called PageRank that determines the quality of a page (and thus its ranking) based on the quality of the links that point to it. The formula seemed to be remarkable effective, and that’s why everyone uses Google. I’m sure that there are many other factors, but people have become obsessed with understanding PageRank with the hope that they will be able to increase their ranking.
Smashing Magazine has a lengthy article that tries to bring all of the known information together, with supporting links to sources and tools.
Everybody is using it, but (almost) nobody really knows how it works. Google PageRank is probably one of the most important algorithms ever developed for the Web. With billions of existing pages and millions of pages generated every day, the search issue in the Web is more complex than you probably think it is. PageRank, only one of hundreds of factors used by Google to determine best search results, helps to keep our search clean and efficient. But how is it actually done? How does Google PageRank work, which factors do have an impact on it and which donâ€™t? And what do we really know about PageRank?
If you are into this sort of thing, you should definitely check it out.