This invention concerns virtual rooms for communicating information about specific topics. The virtual room comprises an identification code to identify the address of each virtual room, and a web site to enable communication between users of a virtual room and to receive and publish information relating to the specific topic. The identification code includes a telephonic prefix and a telephonic subscriber number the later which corresponds to a subject category in a bibliographic classification convention. The virtual room further comprises a data repository to store information relating to the specific topic including communication between users of the virtual room. The data repository is organised according to learning objects and users search an index of the bibliographic classification convention to locate a virtual room related to a specific topic. The invention further concerns an information system for sharing information.