http://www.wizardmedia.net/blog/the-secret-to-googles-seo-ranking-system/

In the world of SEO Marketing, we % u2019re all desperately aiming to be at the top of Google, particularly in the very first 3 natural listings. While there are plenty of ways to leverage our client % u2019s knowledge utilizing social networks advertising, there is one area that Google tries to maintain a key: that is Google % u2019s SEO Ranking formula. Regardless of this secrecy, those in the SEO industry are always testing and trying new points to identify ways to rate on leading as well as stay there.