This document discusses the evolution of marketing from traditional methods to modern social media approaches. It outlines how marketing has shifted from one-way information dissemination to two-way conversations online. Specifically, it explores how social networking sites and user-generated content on platforms like Facebook and blogs are changing how companies connect with and learn about consumers in the Web 2.0 era. Examples of using social media for marketing purposes through video clips, games and ads on networks are also provided.