Library 2.0 items in my link collection at Connotea: see tags "2.0", "gaming", "online community", "podcasting", "rss", "social bookmarking", "social cataloguing", "social networking", "social software", "weblogs", "wiki", "tagging", "folksonomy" [Link]
Library 2.0 / Bibliothek 2.0, collaborative wiki-based bibliography, operated by Patrick Danowski [Link]
Library 2.0 Bibliography, created by the Cowles 2.0 (CTPO) working group charged with "implementing the future of electronic services for both the employees and users of Cowles Library" [Link]
Library 2.0 Reading List, originally created for the ALA Library 2.0/Library Futures online course [Link]