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Never thought I would feel nostalgic for old school address labels. The current version of marketing is much more, ah, specific. If you work with data about people, you should read Christopher Wylie's description of more powerful technology:

https://www.amazon.com/Mindf-Cambridge-Analytica-Break-Ameri...

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The "old school" data brokers were keeping track of menstrual cycles 20 years ago for timed targeted ads. They were very specific about many things. The new kids Google and Facebook didn't invent this game.

Mind posting some links about this? I'd be very interested in reading about it.

I think the show Mad Men mentions this, Peggy if I'm not mistaken. Lunar cycles correlate with menstrual cycles. [1]

[1] https://www.ncbi.nlm.nih.gov/pubmed/3716780

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