Though I’m sure you’ve already read it I feel obliged to add my own link to David Weinberger’s delightful robust and – most admirably – compassionate dismantling of Andrew Keen’s arguments. For a clear understanding of why it’s worth feeling optimistic about Web 2.0 – because it’s worth being optimistic about your fellow man – look no further.

The power of rehearsal
Reflections on the power of rehearsal, from a master performer