35 Computerized database management in the field of housing, namely, collecting data, input and systematization of information, product demonstrations; providing information, namely, product listings; commercial information agency in the field of housing; business information in connection with the selling of chattel; arranging of fairs and exhibitions in the field of housing for commercial purposes via global computer networks; advertising services for others, namely, providing advertisement space on web sites; providing shoppers' guide information via global computer network; online interactive retail store services in the field of housing