The document discusses Web 2.0 technologies like blogs, wikis, podcasting, image sharing, online video, RSS feeds, tagging, social bookmarking, instant messaging, mashups, widgets, shared documents, social networking and their potential uses in libraries. It also discusses the concept of Library 2.0, how it encourages user participation and constant change. Some concerns with Library 2.0 are mentioned along with examples. Practical implementation aspects are covered like staffing, hosting, equipment needed.