Advertising; Online advertising on a computer network; Promotional services; Promotional advertising services; Promotional marketing; Sales promotion services; Sales promotion (for others); Sponsorship (promotion and marketing services); Trade promotional services; Arranging exhibitions for advertising purposes; Conducting exhibitions for advertising purposes; Organisation of exhibitions for commercial or advertising purposes; Arranging and conducting promotional and marketing events; Organisation of trade expositions or shows for commercial or advertising purposes; Demonstration of goods for promotional purposes; Online promotion on a computer network; Presentation of goods on communication media, for retail purposes; Provision of an online marketplace for buyers and sellers of goods and services; Retail services; Online retail services; Retailing of goods (by any means); Retail services for works of art provided by art galleries; Display of works of art for the purpose of sale; Discount store services (retail, wholesale, or sales promotion services); Sales promotion through customer loyalty programmes (for others); Organisation, operation and supervision of customer loyalty schemes; Dissemination of advertising material; Distribution of advertising material; Distribution of goods for advertising purposes; Artists' agent services; Information services relating to advertising