by Gary Messinger
In February 23, 2011, Google launched the Panda update, a major revamp in the search engine’s ranking algorithm that penalize websites for inferior quality. Two months later, it released Penguin, which penalize over-optimization and low quality links. SEO was never the same again.
Prior to these updates, the SEO industry was plagued with automated content and links, which today are no longer effective. Reports from Google Trends indicate a significant...