In the September 5 the Google penguin 3 has updated. Mutt cutts says it is the new data refresh. 0.3% english language has effected. Penguin is the code name of the google algorithm. It is first arrived the April 24 2012. It’s goal is decreasing the ranking of the website that violate the Google Webmaster guidelines. This guidelines are violated by using black ghat SEO techniques like keyword stuffing, cloaking etc. Lots of duplicate sites are effected by this update. When it first arrived 3.1% search query has effected. But now only 0.3% has effected. Still it is very much dangerous for the SEO. I think best technique is that only directory submission can help you. It can overcome some damage of your site. But after all it’s very bad news for the world of SEO