As we all know we all were surprised when Google launched their update of Google services aka panda or penguin. It was released for the webmaster tools and the guidelines of Google for maintaining the Google quality. They have overcome with Google webmaster tool which detect the unwanted and unnatural back links.
What are the back links?
It is very common thing that many of the SEO content creators negligently put things on www just to highlight their products or services which they put via back linking. These back links are well framed with perfection on different site and different WebPages with higher viewer data base. By doing this they work for their website for gaining more traffic and that divert the audience.