35 Advertising, publicity services, letting and /or selling of advertisement space, in particular in virtual networks and/or data files; marketing, management consulting; arranging and/or concluding business deals for third persons and/or arranging and/or concluding of contracts for buying and selling of goods or use of services in particular in the frame of an internet-based sales platform and/or communication platform; letting of advertisement space in the media, in particular on the Internet; establishing, providing and operating an internet-based fair; establishing, providing and operating an internet-based shopping center; establishing, providing and operating an internet-based pharmacy; establishing, providing and operating an internet-based service center; establishing, providing and operating an internet-based doctor's center; establishing, providing and operating an internet-based hospital and/pr rehabilitation center; establishing providing and operating an internet-based self-aid organization; establishing providing and operating of an internet-based medical care and therapist's center