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A comment on Uber discovered they’d been defrauded out of 2/3 of their ad spend. Parent comment

Re:Uber discovered they’d been defrauded out of 2/3 of their... by hertzrat on Sunday January 03, 2021 @08:38PM (#25627099)
To let those advertisers do the experiments themselves, and to relate the campaign to in store sales, would require Facebook and google to share a ton lot of internet-user tracking data
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Re:Uber discovered they’d been defrauded out of 2/3 of their... by webmaven on Tuesday January 05, 2021 @12:00PM (#25647590)
> To let those advertisers do the experiments themselves, and to relate the campaign to in store sales, would require Facebook and google to share a ton lot of internet-user tracking data

I think you are misinterpreting what "do the experiments themselves" implies.

Certainly there is a JOIN with Google's or FB's data, but it can still happen entirely in a hosted sandbox with no data sharing necessary.

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