Advertising and marketing; Business management consulting and advisory services; Computer file management; Conducting market surveys; Demonstration of goods and services by electronic means, also for the benefit of the so-called teleshopping and homeshopping services; Event planning and management for marketing, branding, promoting or advertising the goods and services of others; Marketing in the framework of software publishing; Marketing the goods and services of others; Marketing the goods and services of others by means of push notification technology; On-line promotion of computer networks and websites; On-line wholesale and retail store services featuring downloadable sound, music, image, video and game files; Planning and conducting of trade fairs, exhibitions and presentations for economic or advertising purposes; Promotion, advertising and marketing of on-line websites; Providing a website featuring an online marketplace for exchanging goods and services with other users; Providing business information via a website; Provision of an on-line marketplace for buyers and sellers of goods and services; Publicity and sales promotion relating to goods and services; Shop window display arrangement services; Shop window dressing; Web site optimization