| http://www.w3.org/ns/prov#value | - In some embodiments, payments are made by the advertiser by providing an on-line means to render payments via their own computer (e.g., on-line) using any known on-line payment methods, such as, e.g., by way of example, via credit card, virtual wallets, e-certificates, systems such as PAYPAL.COM and/or any other payment methods.
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