Google has now made a new update in its algorithm for refining the search results. The aim of their update is to make the results more smarter and useful for users. Penguin update filters out the poor sites and pages from their SERP and provides best results for users. Google has also now planned to provide sites with better content in their site than sites with quality SEO. Many sites which have quality content in their site fails to rank well in SERP and this is because of sites which have a moderate content over optimization. They have a lot of spam links from various irrelevant sources. Which makes them to get crawled and indexed by Google frequently.
