The document discusses using social media, like blogs and Facebook, to build a brand and spread the word about a business. It notes that maintaining a blog allows others to see what you know and helps build your reputation over time. Having social media presences on multiple platforms, like combining a blog with Twitter, increases the audience that will see messages about a business. When used correctly, social media can be a valuable addition to marketing and help grow a business through reputation and sharing useful information with others.