This document provides an overview of Web 2.0 and Library 2.0 presented by Brian Gray. It defines key concepts of Web 2.0 like collaboration, sharing, and user-generated content. It also discusses reasons why libraries should adopt Web 2.0 approaches, including alternative methods of communication, publishing and marketing. Examples of popular Web 2.0 tools are given like blogs, wikis, RSS, Flickr, YouTube and Second Life.