The document discusses how the web has evolved from a static, one-directional platform dominated by companies to a dynamic, collaborative, social, and user-driven environment. It provides examples of how the web is now more interactive through user-generated content on sites like YouTube, Flickr, Facebook, blogs, wikis, and social bookmarking/cataloging sites. Libraries have also embraced these changes by utilizing social media, providing online resources, and allowing user tagging and contributions to expand traditional services.