What is Web 2.0?
"Web 2.0 is a term describing changing trends in the use of World Wide Web technology and web design that aims to enhance creativity, secure information sharing, collaboration and functionality of the web." (Wikipedia, 2008)
"Web 2.0 turbocharges network effects because online users are no longer limited by how many things they can find, see, or download off the Web, but rather by how many things they can do, interact, combine, remix, upload, change, and customize for themselves." (Shuen, 2008)