Improvement of the positioning in Google services. Optimization of Web sites check out your url to search engines. SEO, SEM and SMO. Raise the pagerank of a website.
In 2000 Google launched the Google Toolbar, a toolbar that, among other things, showed the public the PageRank of the Google Toolbar PageRank metric goes from 0 to 10, 10 being the maximum, an assessment reached by very few websites. The public PageRank was updated periodically through December 2013, when the last update took place so far.
Although PageRank was more difficult to manipulate, the administrators of websites had already developed tools for creating links and plans to influence the Inktomi Search engine, and these methods were also effective for manipulating PageRank. Many sites focused on Exchange, buy and sell links, often on a large scale. Some of these systems, links farms, including the creation of thousands of sites for the sole purpose of creating spam links. (link building techniques).
In 2004, search engines had incorporated a large number of factors without publishing in their ranking algorithms to reduce the impact of the manipulation of links. In June 2007, Hansell, the New York Times, stated that search engines were using more than 200 factors. The main engines of search, Google, Bing and Yahoo, not published algorithms used to position web pages. Some SEO Positioners have studied different ways of trying to search engine optimization, and have shared their views. Patents related to search engines can provide information to better understand search engines.
In 2005, Google began to customize search results for each user, depending on your history on previous searches, Google offered personalized results for registered users. “In 2008, Bruce Clay said positioning is dead” because of the custom search. It felt that it would be irrelevant to discuss how a web site is positioned, since his position would vary depending on each user, each search.