| http://www.w3.org/ns/prov#value | - Such advertisements may be served, through the search front end 818, or the other front ends 810, 812, 814 to users of the system 800 and may be targeted using techniques like those employed in GOOGLE ADWORDS OR ADSENSE. Such serving of advertisements may depend on ad data in database 834, which may include information about advertisers, the text and other content for the advertisements, bid price
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