1. A method of communicating user data between virtual worlds systems, the method being performed on a virtual worlds server, the method comprising: receiving, at a virtual worlds server including one or more processors, a request for a transfer of an avatar from an external virtual worlds server; determining authorization rights of the avatar to access the virtual worlds server; completing a transfer protocol with the external virtual worlds server; converting characteristics associated with the avatar based on one or more conversion rules associated with the virtual worlds server; and engaging the avatar for interaction with one or more worlds on the virtual worlds server.