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Submission + - Study: Ad Networks Not Honoring Do-Not-Track (itworld.com)

itwbennett writes: "According to a new study from Stanford University's Center for Internet Society, almost half of the Network Advertising Initiative (NAI) members that Stanford studied left tracking cookies in place after a Web user opted out of targeted ads. NAI's executive director said that with no consensus on what do-not-track means, ad networks continue to gather data for business reasons other than providing targeted advertising. 'Under the NAI self-regulatory code, companies commit to providing an opt out to the use of online data for online behavioral advertising purposes,' Curran said. 'But the NAI code also recognizes that companies sometimes need to continue to collect data for operational reasons that are separate from ad targeting based on a user's online behavior.'"
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Study: Ad Networks Not Honoring Do-Not-Track

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A complex system that works is invariably found to have evolved from a simple system that works.