Registration is now open for Web 2.0 Expo, the first event specifically designed to help teach Web 2.0 techniques and best practices to people in the trenches directly involved in the design, development, engineering, marketing, and business of second-generation internet technology. Register now and save up to $200 on registration fees. Web 2.0 Expo happens April 15- 18 at Moscone West in San Francisco, CA .