Whatever you think of the Web 2.0 name, it is clear that Creative Commons is highly relevant, as remix of various forms (e.g., of content and web services) is core to the phenomena, with an attendant need for interoperability and flexible copyright licensing.
Xtech 2005 featured presentations from Creative Commons and Science Commons. I hope to hear about projects using Creative Commons at Xtech 2006.
Check out the simultaneously expansive and 100% on point Xtech 2006 CFP now. Proposals are due 2006-01-09.