Advertising services; Arranging and conducting of fairs and exhibitions for business and advertising purposes; Commercial administration of the licensing of the goods and services of others; Import-export agency services; Marketing research; Negotiation and conclusion of commercial transactions for third parties; On-line advertising on a computer network; Provision of an on-line marketplace for buyers and sellers of goods and services; Publicity and sales promotion relating to goods and services available on-line; Sales promotion for others