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Even if the data is anonymized, isn't there a risk of a data leak, someone inferring your identity based on your browsing preferences? Like imagine someone who lives in a small town who's really into model railroads, and nobody else around is. Whoever from xyz location has done lots of browsing about model railroads, is likely that person and now we can see what else he/she's been browsing.

The data's being collected regardless of whether they use it to target ads at you, the risk profile doesn't change at all.

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