The document provides an overview of practical uses for Web 2.0 technologies. It defines Web 2.0 as a transition from standalone websites to a computing platform serving web applications. Key differences between Web 1.0 and 2.0 include a shift from solitary to shared and community-based work. The document then discusses various Web 2.0 applications and how libraries can use tools like weblogs, RSS feeds, wikis, social networking, bookmarking and collaboration to communicate, share information and resources.