Use of computer networks to facilitate commercial activities, including the production, distribution, sale and delivery of g/s. Closed system linking specific users internal to a company or group; commonly used for data exchange. Supply of tangible or electronic g/s over the internet. Supply of tangible goods involves conventional mode of delivery; electronic goods are downloaded directly to computer. Payment made through electronic (intangible) media such as telephone or intranet rather than by cash or cheque. Payment may take the form of credit card charges, debit of bank accounts, or e-cash. Often, customers can access these forms of payment on business"s site. Online payment system that enables anonymous transfer of money over internet. Electronic payment system used to accept, transmit or process transactions made by payment card to transfer funds or information among issuer, user and merchants. Website document setting out contractual terms, the acceptance of which is indicated by clicking on the appropriate icon (e. g. i agree ).