"Web 2.0 describes the changing trends in the use of World Wide Web technology and web design that aim to enhance creativity, secure information sharing, collab

"Web 2.0 describes the changing trends in the use of World Wide Web technology and web design that aim to enhance creativity, secure information sharing, collaboration and functionality of the web. Web 2.0 concepts have led to the development and evolution of web-based communities and hosted services, such as social-networking sites, video sharing sites, wikis, blogs, and folksonomies." Wikipedia seems to think it is. How is ichc different in any significant way from youtube?