As I've mentioned here before, over the last couple of years I've been one of the directors of a large teaching and learning grant project at QUT, aimed at introducing blogs, wikis, and other more advanced online tools into the teaching environment. Our fundamental assumption in this project is that in a social software, Web 2.0 world, students crucially need to build the critical, creative, collaborative, and communicative capacities (or C4C, for short) to operate effectively, whether in their working or private lives, or in their wider role as citizens. Advanced social software tools in learning environments can help build such capacities, or (where they exist already, as is increasingly the case) further enhance them by providing a more systematic approach to their development.