The document discusses Web 2.0 and its importance for libraries. It defines Web 2.0 as the participatory, social, user-focused web that allows users to create and share content. The document explains that Web 2.0 is important for libraries because it enables content creation, patron interaction, participation in knowledge communities, and collaboration. It provides examples of Web 2.0 tools like blogs, wikis, social bookmarking, photo sharing, and video sharing that libraries can use to engage with users.