The document discusses the key aspects of Web 2.0 including how it facilitates interactive and user-centered design, allowing users to interact and collaborate by generating and sharing content. Examples mentioned include social media sites, blogs, wikis, video sharing, and applications that make use of folksonomies, AJAX, RSS, and APIs. Web 2.0 represents a shift to more dynamic content that is read and written by users, rather than just viewed as static pages.