Web Squared — Join John Battelle and Tim O'Reilly as they outline their ideas for how the Web is evolving—how the world is putting the Web to work to make business more efficient, culture more vibrant, and society more tolerant. It's been six years since the original Web 2.0 thesis and definite trends are emerging. Applications are becoming platforms for collective action, not just collective intelligence. The "data shadows" that people leave in cyberspace are becoming richer and deeper. When web meets world, we get Web Squared — the theme of this year's Web 2.0 Summit. This live webcast gives you the chance to ask questions and share your own web-squared ideas. Join the webcasts now!