The document discusses how Web 2.0 enables users to become active participants rather than passive consumers of digital media through open source applications and free tools. It contrasts Web 1.0 and Web 2.0 characteristics such as one-way vs two-way interaction. The document also provides examples of collaborative learning tools like wikis, web meetings, and virtual learning environments that can be used to facilitate learning conversations, create presentations, and conduct virtual tours collaboratively online.