I received an email survey from Millard Brown asking me to participate a survey about Continental. Spent some time looking to see if they were a real company and I was not being spammed. After looking the company up (an ad agency) I decided to answer. Survey started asking personal questions and when I opted out of disclosing my income level, it said I had been screened out and to go away.
My motivation was to provide feedback about issues with their service and not be spammed. Neither happened and once again Continental found a way to waste my time.