This document provides an overview of Library 2.0, which refers to more interactive, collaborative, and community-driven approaches for libraries. It discusses how libraries are adopting Web 2.0 technologies and principles like blogs, wikis, social networking, tagging and more. Examples are given of libraries using these tools on platforms like Flickr, Facebook, and social networking sites to engage users and remain relevant in a changing information landscape. The document advocates that Library 2.0 requires constant change, participation, and empowering users through new services.