| http://www.w3.org/ns/prov#value | - In this way, a user of system 10 may effectively target advertisements and other information to an interested user. [0026] This example of system 10 includes multiple user devices, such as user devices 20, 40 and 50, which may be personal computers (PCs), wireless devices and similar devices that include a visual display device 22, 42 and 52, respectively.
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