NOTE:
Web 2.0" is commonly associated with web designs that facilitate interactive information sharing, interoperability, user-centered design and collaboration on the World Wide Web. Examples of Web 2.0 include web-based communities, hosted services, web applications, social-networking sites, video-sharing sites, wikis, blogs and mashups. A Web 2.0 site allows its users to interact with other users or to change website content, in contrast to non-interactive Web 1.0 websites where users are limited to the passive viewing of information that is provided to them. From Wikipedia