A colourful (yet not distracting) and well done Infographic on the topic of Inbound or Permission  Marketing, terms attributed to Seth Godin.

As the Infographic points out, Social Media plays an important role in Search Engine Optimization. When done well, Social Media results in more people (traffic) to your website, presumably from a good number of your posts including links to pertinent (helpful/interesting) information on your website.

Cornerstones of Inbound Markteing