Google has filled a patent that reveal some of the technologies behind their famous pageranking algorithm:

 from www.wwwcoder.com If you thought you cracked the Google Code and had Google all figured out … guess again.
Google’s sweeping changes confirm the search giant has launched a full out assault against artificial link inflation & declared war against search engine spam in a continuing effort to provide the best search service in the world… and if you thought you cracked the Google Code and had Google all figured out … guess again.
Google has raised the bar against search engine spam and artificial link inflation to unrivaled heights with the filing of a United States Patent Application 20050071741 on March 31, 2005.  The filing unquestionable provides SEO’s with valuable insight into Google’s tightly guarded search intelligence and confirms that Google’s information retrieval is based on historical data.
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