Google new update penguin algorithm issued 24 April, 2012 to remove the spammy websites and black hat technique from his record. Lots of website are effected some gain the pagerank and some gone done. Our SEO team surprised after seeing the result all website will effected lots. We have checked lots of website are not in 1st which they have no keywords and good Alexa rank, even CSS not validated etc. But still they are on the 1st page and our some website dropped to 2nd page. Google not disclosed what they have changed clearly.
As per internet search we found the below points.
