The bringing together, for the benefit of others, of a variety of goods, enabling customers to conveniently view and purchase those goods; providing on-line, interactive databases, bulletin boards and/or websites for the posting, promotion, sale, resale and/or consignment of a variety of goods via a global computer network; advertising including on-line advertising on a computer network; auctioneering services including on-line auctioneering on a computer network; sales promotion (for others); compilation and systemisation of information into computer databases