Providing online interactive bulletin boards for transmission of messages among users of computer, mobile and wireless networks and telecommunications systems concerning classified listings and listings for want ads, for sale advertisements, announcements, employment, events, real estate, roommates, resumes, community, personals, politics, family, arts, services and information on a wide variety of topics of general interest to the public; providing on-line forums for transmission of messages among users of computer networks and telecommunication systems concerning products, services, work, real estate, employment, health, family, arts, politics, leisure, romance and information on a wide variety of topics of general interest to the public; and electronic transmission of messages, images, data and video, in particular information regarding advertisements