The document provides an overview of Web 2.0 and social media. It discusses the evolution from Web 1.0 to Web 2.0, how users have shifted from passive consumers to active participants and creators of content. It also analyzes different types of social media users and their level of participation, from creators and critics to collectors, joiners and spectators. Additionally, it questions whether Microsoft can be considered Web 2.0 based on some of their strategies and services.