This document discusses social media and its importance for businesses. It covers various types of social media like Facebook, Twitter, and YouTube. It emphasizes that social media is now essential for search engine optimization strategies. Businesses need an effective social media and SEO strategy to get high rankings on search engines, build their brand, and generate traffic and sales from new online marketing channels like YouTube. The document also provides examples of how some large brands like Obama, Microsoft, and Domino's Pizza have successfully used social media.