SEO services - Search engine optimization offered by various companies got affected by two updates Google Panda and Penguin. The Google Panda Updates started in 2011 and was followed by Penguin in 2012. The whole year was a storm for the Black Hat SEO companies who promoted the websites in wrong manner , never initiated quality and user friendly websites which were useful for clients.

This video on Google Panda Update 2012 Vs Google Penguin makes you understand about the tit bits facts .