Auctioneering; Commercial information and advice for consumers; Demonstration of goods; Demonstration of goods and services by electronic means, also for the benefit of the so-called teleshopping and homeshopping services; Distribution of prospectuses and samples; Invoicing; Marketing research; Modeling for advertising or sales promotion; On-line advertising on computer networks; Pay per click advertising; Rental of advertising space on web sites; Word processing; Writing of publicity texts; Modeling for advertising or sales promotion; On-line auctioneering; Rental of advertising space on web sites