"After Penguin was released, search engine optimization (SEO) changed dramatically for a lot of people. A brief period followed in which many experts and SEO consultants were condemned and vilified for their advice. Organic rankings were impacted right, left, and center, and nobody had a definitive answer for what was really going on. Now, months after the Penguin update, we took the enormous amount of data that we had and built a timeline showing the changes that Google has made over the past 12 years so that YOU don't have to left grasping in the dark for information. Infographic designed by Stephen S.