Some Internet search engines are configured to search for keywords across a website, then use a mathematical equation that takes into account the number of times keywords appear on this website, and takes into account these factors along with the location of keywords to determine the rank of the website.

Other Internet search engines use a process that judges the amount of times a website is linked to another in order to determine the range must occupy the site. The process of using links to determine search engine ranking is called link analysis.

Search by keyword and link analysis are both part of a routine procedure for the Internet search engine called Search Engine Optimization or SEO.

Most of Google’s popularity is attributed to their preferred form of search engine optimization, a program called PageRank or popularity rank pages. When PageRank was patented, the patent was assigned to Stanford University.

PageRank was designed by Larry Page and Sergey Brin when they were students at Stanford University as part of a research project on Internet search engines.

Search Engine Ranking – Factors to evaluate websites

Below is ranked the most important ranking factors in order of priority (based on offer SEOmoz.org ranking factors)

1 Key in the Title Tag                                                                                                                   4.9
2 General Link Popularity of Site                                                                                               4.4
3 reference text of an inbound links                                                                                           4.4
4 Age of the page / domain                                                                                                          4.1
5 Link Popularity within its own page                                                                                        4