| http://www.w3.org/ns/prov#value | - he Washington Post, Verizon, AT&T and other providers were reluctant to reveal the extent of their Web filtering, but the companies that sell the technology -- companies such as NebuAd, Phorm and Front Porch -- were more forthcoming.Front Porch collects detailed Web-use data from more than 100,000 U.S. customers through their service providers.
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