Investigative Exercise -What is social media / Web 2.0.

Library 2.0" as "the application of interactive, collaborative, and multi-media web-based technologies to web-based library services and collections.

Library 2.0 could be understood to have these four essential elements:It is user-centered.It provides a multi-media experience,It is socially rich, It is communally innovative.

http://www.webology.org/2006/v3n2/a25.html