Google guidelines for SEO are necessary to follow in achieving sustainable results. Many SEO professionals try to decode SEO Google guidelines and get involved in shady tactics which are also known as black hat SEO practices. Initially, they may feel that they have succeeded in making Google tricked but it is only a matter of time until they get caught up by Google. From time to time, Google updates its algorithm like Penguin or Panda de-rank scheme which had left many website owners behind their competitors.