The document discusses the evolution of the web from Web 1.0 to Web 2.0. Web 1.0 focused on static, author-controlled websites used mainly for commerce and information. Web 2.0 is more collaborative, allowing users to create and share content. Key aspects of Web 2.0 include user-generated content, social networking/participation, and software that improves as more people use it. Examples of popular Web 2.0 applications discussed include blogs, wikis, social networking sites like MySpace, and virtual worlds like Second Life.