Providing online interactive web portal for transmission of messages among computer users concerning classified listings and listings for announcements, events, classes, meetings, activities, housing, real estate, roommates, rentals, for sale advertisements, want ads, employment, resumes, volunteerism, services, garage sales, school information, community information, neighborhoods, personals, politics, family, arts and information on a wide variety of topics of general interest to the public; providing on-line forums and discussion groups for transmission of messages among computer users concerning health, family, arts, politics, leisure, romance, work, and information on a wide variety of topics of general interest to the public