To succeed online, regardless of the market that are designed, we must take into account the constant competition and tactics used by competitors to achieve to climb higher and higher rankings in search engines. But why is it so important to be top ranking on Google, Yahoo or Bing? Just because search engines are the preferred means of Internet to find the site that interests them, if not the only way. Of course, there will come a potential customer is directed to your site by clicking a link on that of a partner, but overall, everything must be done so that the results are given where this is crucial: on search engines. Internet users are also more easily trust a site top ranking.