Advertising and marketing services in the fields of real estate, consumer goods and consumer services; on-line advertising and marketing services in the fields of real estate, consumer goods and consumer services; real estate marketing services, namely, on-line services featuring tours of real estate; providing an on-line showroom for the goods of others in the field of real estate, consumer goods and consumer services; providing information in the field of consumer goods for home sales, and consumer services relating to real estate; promoting the goods and services of others by means of linking the web site to other web sites featuring real estate, consumer goods and consumer services; operating marketplaces for sellers of goods and services in the field of real estate; providing information about real estate, mortgage loans, title insurance, attorneys, property values, home buying, home selling, and for-sale by owner real estate transactions