This document discusses social media and how it can be used for business. It defines social media as the fusion of sociology and technology that transforms one-way communication into a two-way dialog. It then outlines some popular social media platforms like LinkedIn, Facebook, Twitter, and YouTube and provides their key features and demographics. The document notes that social media requires traditional marketing tactics and outlines how businesses can use it to build their audience, offer value, and create experiences to drive desired actions and relationships. It provides a case study of how a spa company used social media for promotions and increased its website views and Facebook fans.