One great example of personalized marketing is the Charles Duhigg New York Times article titled, “How Companies Learn Your Secrets.

Charles wrote this article as a sequel to a public showdown. In this incident, a furious father stormed a Minnesota Target store to demand why his teenage daughter received coupons for baby products.

Later, the father found out his daughter was pregnant.

It turns out the retailer was able to predict her pregnancy and personalized the promotions she received. How? The retailer collected ‌(completely legally) and analyzed a ton of data. Creepy or great marketing?