Start of with a series of demonstrations of web 2.0 activities/sites that illustrate key Web 2.0 concepts

Go on to talk about this key topics (maybe use O'Reilly's Web 2.0 graphic? Overused?

What has changed? Why is this not just hype?

Why this is changing elearning? elearning 2.0 - the profound shift that happens when masses of quality educational resources are available for free and your 'cohort' is no longer artificially constrained but emergent

How I stopped worrying and learned to love Web 2.0
a story in 5 chapters about the points at which I came to understand something new was happening