Internet is big enough (it has almost 50 billion of sites) to get lost in this sea of content. The Page Rank helps exist in this universe.

Obviously we all take for ever to seek information online, find exactly what we want. Internet is large enough (It has almost 50 billion sites or so) to get lost in this sea of content. This is why search engines like Google, Baidu, Ask, AOL, or Yahoo! Bing, develop complex algorithms, or mathematical instructions, telling them its servants how to deal with an assigned task.

Google’s algorithm, the most used search engine in the world, ranked number one in the Alexa index of the most visited websites on the planet, with an estimated 12 billion monthly searches is called PageRank and was designed by Larry Page and Sergey Brin, founders of the company, as students of the department of computer science at Stanford.

PageRank believes that the most visited pages, and therefore they should appear higher in search results, are those that concentrate more links from other websites. But look who links to that page, i.e. a website that receives a link from another site much consulted, is more likely to rank higher in results than one that receives a link from a small portal.

However, the specific details of how this algorithm is made are secret and guarded Google keeps maintaining an advantage over competitors in the market.

What we do know is that important part of how this search works has to do with the keywords, or keywords. Along with the values assigned to the number of links a page short, the Google algorithm looks at the number of times a keyword appears on the web, so that, theoretically, a website should appear higher in search results if it contains a greater number of keywords. This function is similar to that of other search engines.

In addition, Google also implemented spiders or crawlers, automated programs that track Internet recreating a map of links that includes certain keywords. The algorithm then crosses the index generated with the words searched by the user and refines it a bit more with the index PageRank. Thus, the results we get are so specific that it has become a trademark of the giant web.