The document discusses the differences between Web 1.0 and Web 2.0. Web 1.0 focused on one-way publishing of content while Web 2.0 enables two-way interactions and user-generated content through technologies like blogs, wikis, RSS, and social networking sites. Web 2.0 applications also tend to be more open, using standards-based technologies and open-source software. Examples of popular Web 2.0 sites include Wikipedia, YouTube, Facebook and Twitter.