The document discusses key concepts around social networks and online communities. It provides definitions for social networks and online communities, explaining their differences and strengths. It lists common types of members in social networks, from Creators to Inactive users. Success factors for social networks are identified as Remuneration, Influence, Belonging, and Significance. Examples of social networks like Barack2.0 and WIND are discussed. The document emphasizes connecting with users, engaging them, and communicating consistently and positively.