Comment by troupo

Let's put it another way: which advertising needs, exactly, are being served by keeping my precise geolocation data, device identifiers and IP addresses for 12 years? https://x.com/dmitriid/status/1817122117093056541

Which advertisement needs, exactly, are being served by sharing all that data with 1498 "partners" each of which will store similar data for similar periods of time? https://x.com/dmitriid/status/1733421877119324609

Which advertisement needs are not being served by showing contextual ads?

BTW, personalised ads favour huge brands on huge advertisement platforms. Because https://www.sciencedirect.com/science/article/pii/S016781162...

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Our simulation study reveals that more than 50% of audience segments ... require a minimum increase in performance larger than 700% to be at least as profitable as no-targeting. ...we find that more than half of the audience segments require an increase in CTR0, CR0, and m0 larger than 100% to be at least as profitable as no-targeting.

Approximately half of the audience segments on Spotify require a higher increase in CTR0 for the advertiser, suggesting they might be less profitable than no-targeting.

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