Audience measurement and analysis company. comScore asks people to install monitoring software on their computer in exchange for various benefits. This software records their browsing activity and comScore sells this to marketing companies and campaigns. comScore also collects data from other sources, including TV audience measurement and surveys. They are a huge company, with offices in nearly two dozen countries.
Major data broker that collects data from a wide variety of sources. They sell data and match up the identities of people across data sources. Acxiom also offers consulting services to help organizations use their data. They created a website (https://aboutthedata.com) that explains how targeted advertising works and offers to let people control how their data is used, but also likely collects data in the process.
Scott Howe, Warren C. Jenson, James Arra, Anneka Gupta, Rick Erwin, Dennis D. Self, Jerry C. Jones, Sheila Colclasure, Justin Schuster, Janet Cinfio, David Eisenberg