The document discusses how customers are more influential than a company's advertising in building its brand. It emphasizes that customers talking to other customers about a company or its products is important. The linear purchase funnel model is outdated, and companies must find ways to engage customers throughout the purchasing cycle and after purchase as well. Integrating social media, mobile strategies, content creation and CRM can help amplify customer conversations and influence. Companies should listen to what customers are already saying before determining how to participate in the conversation.