easy access, autonomy, and virtual identity creation of the 3D VW can become problematic as inappropriate content and misbehaviors. One way to work around these issues, to maximize the 3D VW affordances, and to minimize the issues as much as possible is to adopt the OpenSim approach. For example, working with K-12 schools in cloned Second Life virtual worlds hosted on a private server allow only the authorized schoolteachers and students access.