providing on- line chat rooms via a global computer network and interactive television for transmission of messages among computer users concerning a wide variety of topics and fields, including books, textbooks, educational materials, classes, seminars, motion pictures, music, videos, games, toys, multimedia products, computer software, education and entertainment; providing on-line bulletin boards via a global computer network and interactive television for transmission of messages among computer users concerning a wide variety of topics and fields, including books, textbooks, educational materials, classes, seminars, motion pictures, music, videos, games, toys, multimedia products, computer software, education and entertainment