Anyone who spotted the Periodic Table of SEO Ranking Factors as featured on SearchEngineLand.com will know this quirky little illustration summed up basic ranking factors in a niffty graphic that people can share with their pals. That is the beauty of inforgraphics, if the are interesting or relevant enough people will share them. And did they ever! check out the shares on this one! Now as previously mentioned social signals are important to driving traffic after all if you c