This document discusses strategies for harnessing online social networks for business purposes. It outlines four main strategies: listening, talking, energizing, and supporting. It emphasizes the importance of listening to understand customers and monitor brand perceptions. Methods discussed for listening include setting up private online communities and conducting brand monitoring. The document also discusses approaches for talking with customers such as participating in online discussions. Energizing strategies focus on tapping enthusiastic customers to help spread word-of-mouth. Supporting involves enabling customer support through social networks. The overall goal is to strategically engage with customers at each stage of the marketing funnel through various online social platforms.