While advertisers dominate online tracking, I was also able to detect two major data brokers: Experian (5% of pages), and Acxiom (3% of pages). The main business model of data brokers is to collect information about individuals and households in order to sell it to financial institutions, employers, marketers, and other entities with such interest. Credit scores provided by Experian help determine if a given individual qualifies for a loan, and if so, at what interest rate. Given that a 2007 study revealed that “62.1% of all bankruptcies ... were medical