[Air-L] Audio User Interface / Voice to Web design

Hello, I'm working on a guide to designing Audio User Interfaces, particularly those used for web platforms (e.g. blogging platforms powered by voice calls), and wondered if people on-list could suggest any good case studies / literature in this area? I'm aware of some work done by IBM in India, but would love to hear other examples. Thanks Rodrigo -- Rodrigo Davies Research Assistant, MIT Center for Civic Media M.S. Candidate, Comparative Media Studies T: +1 857 250 1254 Skype: rodrigodavies