SEO strategy is based on behavior of internet users, who type specific keywords while searching for websites on a particular subject. For example, a user who seeks information on hotels in California would typically type “best hotels California” or “best hotels CA” in search box, and within seconds the search engines will show the first SERP containing a list of ten websites answering to the user’s inquiry. The next page will show next ten sites and so on. Behavioral studies of Net users indi...