| http://www.w3.org/ns/prov#value | - Marketers are willing to spend lavishly to get their ads in front of people who are likely to buy their products. (See clarification below.)Though highly targeted ads can spook some consumers, they also serve as the mechanism that make it possible for many websites and applications to be free, including Google's Gmail and Facebook (and, yup, CNNMoney.com). 0:00
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