auctions bus019000bus022000bus069030 business commerce commerceélectronique computer computerbooks:internetgeneral computernetworks computers computertechnology consumerprotection digitalisierung e-commerce ebay(firm) ebay(firme) economics electriccontracting electroniccommerce electroniccontracts gametheory general gestion intelligentagents(computersoftware) internet internetandolderpeople internetmarketing lawandlegislation management marketing negotiationinbusiness newbusinessenterprises nonfiction nouvellesentreprises réseauxd'ordinateurs sales selling simulationmethods smallbusiness taxation unternehmen venteauxenchèressurinternet webservices webusagemining wirtschaftswachstum