A few days ago I was on my health insurance company's website and stupidly participated in a lifestyle survey.
Instantly I began receiving e-mails telling me that I would love their new health classes, designed for busy professionals who need to lose weight. Included: tips like "Walking just 15 minutes a day is beneficial!" and "Try a salad for lunch instead of eating fast food every day!"
Obviously, one of the questions NOT covered in the survey was "Are you already IN one of our programs?" Then I could have answered, "Yes," and I wouldn't have to be searching madly for an "unsubscribe" option.