Nothing like getting it from those that practice it. I urge all regulators, public interest consumer advocates, journalists, and others concerned about their privacy (let alone other key civil society issues) to read:
Fishing From a Barrel: Using Behavioral Targeting to Reach the Right People With he Right Ads at the Right Time. Rob Graham. Learningcraft Press.
The Online Advertising Playbook. Joe Plummer, Steve Rappaport, Taddy Hall, and Robert Barocci. Wiley.