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Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	In this payment scheme, the publisher takes all the risk of running the ad, and the advertiser pays only for the amount of users or members who complete a transaction, such as a purchase or sign-up.
http://www.w3.org/ns/prov#wasQuotedFrom	freepatentsonline.com