Web 2.0 is commonly associated with web development and web design that facilitates interactive information sharing, interoperability, user-centered design and collaboration on the World Wide Web.
It includes web-based communities, hosted services, web applications, social-networking sites, video-sharing sites, wikis, and blogs.
A Web 2.0 site allows its users to interact with other users or to change website content, in contrast to non-interactive websites where users are limited to the passive viewing of information that is provided to them.
