What is Web 2.0?

Web 2.0 is a new generation of web development and design. It focus on improving communication, information sharing, and collaboration on the World Wide Web. Web 2.0 have led to the development and evolution of Internet communities, hosted services, and applications, such as social-networking sites, video-sharing sites (ex: Youtube, Vlog), blogs (ex: Blogger, Wretch), and wikis, etc. It's a more powerful and useful site than Web 1.0.