Google has been and is a pioneer in changing and modifying the way we seek and find things online. It boasts the largest search engine and from its humble beginnings back in 98 in the garage of their creators Larry Page and Sergey Brin, two university students graduate from the University of Stanford, has not stopped "reinvented."

Before Google, when users do a search, they spend much time looking at pages with results that approached most occasions they sought. Search engines like Lycos, Altavista, Excite, Hotbot, Ozu, Webcrawler, Infoseek, Ask and WebFerret offered results based on words containing the pages, but not page rank, the algorithm organized Internet. In many cases, those words had nothing to do with the content of the site, which complicated navigation and involved quite a big waste of time.

The PageRank calculates the importance of the web as a function of many variables. It is a numerical value representing the level of popularity of a Web site to Google. With the SEO Page Rank has lost some followers because many believe that it is useless a page rank higher if you do not appear in good positions in search engines.

Hiring an seo company or making our own can make our web to get positioned between the first results that we provide the search engines. As I mentioned at the outset to be cautious and careful about how we do it, well informed, and choosing a good company that makes us a reliable service and because with the boom in demand there are also many scams and "promises" that many cases do not come to realization.