In May 2013 Google has updated the algorithm Penguin 2.0. Large-scale renovation of the algorithm must improve Penguin in 2012 and must reduce the ratings of Web sites involved in buying links. This statement creates fear in many small companies whose business depends on search engine optimization (SEO). But the posts of Google are often introduced into confusion because of their contradictory. Differences of algorithms Panda, Penguin and manual penalties…