Dave Cormier has done some very bleeding-edge work in educational technology using the Drupal open source community management system as well as OpenSim (an open source version of Second Life). "Opensim is an opensource Multi User Virtual Environment. It allows you to have much of the functionality from something like Second Life, and you can host it on any server you like, or, if you like, on a desktop in your classroom." He is currently looking for help, so if you have any experience with OpenSim, contact Dave. - HJ
