Ad serving, namely, placing advertisements on websites for others using specialized computer software; Advertisement and publicity services by television, radio, mail; Advertising and publicity services; Assistance, advisory services and consultancy with regard to business planning, business analysis, business management, business organization, marketing and customer analysis; Conducting of auction sales; Conducting, arranging and organizing trade shows and trade fairs for commercial and advertising purposes; Cooperative advertising and marketing; Cooperative advertising and marketing services by way of solicitation, customer service and providing marketing information via web sites on a global computer network; Development and production of the advertising content of banners and signs for advertising, promotional, or marketing purposes; Development, operation and administration of digital signage systems and digital advertising systems for others, namely, providing advertising space by electronic means and global computer information networks; Import-export agencies in the field of energy; Marketing services; Online advertising on a computer network; Product merchandising for others; Providing user rankings for commercial or advertising purposes