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Re:Uber discovered they’d been defrauded out of 2/3 of their... by jefftk on Sunday January 03, 2021 @02:57PM (#25624655)
> No one can actually prove it has any ROI at all. No one is willing to run the experiments necessary.

Depends enormously what sort of business you're in. I used to work for a company where all of our sales came from ads, 100%. It was trivially true that if we stopped advertising we would have no sales. We were also committed to running experiments: we knew how well all of our many advertising channels performed, and we ran A/B tests for every change.

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