| http://www.w3.org/ns/prov#value | - y a persisting decline in the average prices for the ads that appear alongside search results and other Web content, a measure known as ???cost per click.??? The average price fell by 6 percent from the same time last year, marking Google???s 11th consecutive quarter of erosion.Ad prices have been sagging because marketers haven???t been willing to pay as much to pitch consumers who are squinting
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