What is web 2.0?
Collins English Dictionary (accessed online) defines web 2.0 as:
Web 2.0 — n
the internet viewed as a medium in which interactive experience, in the form of blogs, wikis, forums, etc, plays a more important role than simply accessing information
Merriam Webster Dictionary does not include a definition for web 2.0.
Wikipedia explains web 2.0 in the following way:
The term Web 2.0 is associated with web applications that facilitate participatory information sharing, interoperability, user-centered design, and collaboration on the World Wide Web.