The main internet search engine is google. In some countries the word is used as a synonym googeln Internet search. For visitors on the website is indispensable appear on the first two pages of google results. Unfortunately this has led some developers of web pages, manipulating your pages so that as high as possible appear in the results, but contain no information of what was being sought.
Why google search does not always mean finding what you are looking for. The criteria for a web page displayed at the top of the results in google are not public and are changing. So there are many gurus who offer their services to improve the appearance of a web page of google results. Many use all sorts of tricks and deception to achieve the abyss of google. All this makes the google search can turn into an odyssey seeking the desired information.