Eric Ries' forthcoming book is THE LEAN STARTUP: How Today's Entrepreneurs Use Continuous Innovation to Create Radically Successful Businesses (Crown Business, September 2011). He is the creator of the Lean Startup methodology and the author of the popular entrepreneurship blog Startup Lessons Learned. He previously co-founded and served as Chief Technology Officer of IMVU, an online social entertainment destination with currently 50 million registered users. Ries also has worked as a consultant to a number of startups, companies, and venture capital firms. In 2010, he became an Entrepreneur-in-Residence at Harvard Business School.