Who Do Online Advertisers Think You Are?

[rcjordan]

(2012 article. Imagine where the tech is now.)

The company's software enables its customers to sort consumers into 30,000 market segments like "light spenders" and "safety-net seniors," and this fine-grained categorization helps make real-time bidding possible.

http://www.nytimes.com/2012/12/02/magazine/who-do-online-advertisers-think-you-are.html