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> There is a different incentive at play here. Netflix wants to track individuals.

Maybe this is naive, but doesn't Netflix already have enough information from the account already? Credit card info, name, address… what does having an IP address get them in addition to all that?

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It gives you a lot more information. Where you travel, who you travel with, what types of content you associate with different regions, how much you share with friends, how your preferences change as you hang around different areas and individuals.

Information is deceptive because it's exponential. Detectives often make or break cases on a single lucky clue. Data mining on the Internet is no different. Information goes massively further than most people realize.

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