ndex entries after having eliminated and compiled
             according to the previously explained actions.
             The function of search engines is thus not to search the vast extent
             of the Internet itself. Instead Alta Vista, Hotbot, Google and others
             create databases, or the above-mentioned indexes, of information relating
             to information available on the Internet. This information then includes
             copies of Web pages that can be searched (Web Centre, 2003). Of the
             reported 1.2 to 1.5 billion documents found on the Internet then, search
             engines enter only about 500 million to 350 billion in their indexes. This
             is because many of the total number of pages are duplicated and take
             unnecessary space in the index, making search time slower and results le
             ...