Telegram transmission, telephone communication, transmission of data and information by teletypewriter, facsimile transmission, electronic mail; rental of telephone and other telecommunications equipment; transmittal of business information via electronic communications networks; computer aided transmission of information and images; providing private and secure communication over a computer network for use by subscribers; providing facilities and equipment for videoconferencing; providing on-line electronic bulletin boards for transmission of messages among computer users concerning the goods and services offered for sale by the users; providing multiple user dial-up and dedicated access to the Internet