1. Introduction to information markets / Robert W. Hahn and Paul C. Tetlock -- 2. Five open questions about prediction markets / Justin Wolfers and Eric Zitzewitz -- 3. Designing information markets for policy analysis / John O. Ledyard -- 4. Deliberation and information markets / Cass R. Sunstein -- 5. Deliberative information markets for small groups / Michael Abramowicz -- 6. Foul play in information markets / Robin Hanson -- 7. The Iowa electronic markets : stylized facts and open issues / Joyce E. Berg and Thomas A. Rietz -- 8. A new tool for promoting economic development / Robert W. Hahn and Paul C. Tetlock