Virtual worlds are still fairly new to most, and many still view them as games. But there is a growing realization that virtual worlds can offer real value to businesses, government agencies, and educational institutions. A report recently released by JISC presents a comprehensive study of how virtual worlds are being used to enhance learning and training in many industries and institutions. Serious Virtual Worlds presents background information, case studies, glossary, and other resources offering a good read for anyone who has wondered about just what is seriously going on at the moment in virtual worlds.