Tacky blood donor solicitation technique

So I was going to the post office one day, minding my own business. All I wanted to do was mail a letter, go home, and relax. I pulled into the parking lot of the post office, parked my car, and there it was -- the blood donor mobile. Now, I don't have any problem with donating blood, people who like to donate blood, or people who ask for blood donations. But there is a right way to do it and a wrong way to do it. The right way is with an educational campaign explaining the importance of donating blood for use in medical emergencies that may involve you, a neighbor, or family member. The wrong way is to lay guilt trips on people and almost equate them to murderers.

The blood donor worker at the post office was soliciting people on the way out with this question, "Do you want to save a life today?" Psychologically, this is a classic sales move knows as the foot in the door technique. You start off with a question that you know the person will have to answer a certain way. After all, who is going to say "No, I don't want to save a life." And if you don't want to save a life, one could also argue you chose NOT to save a life, which can at least be considered, say, negligent homicide? I'm being a bit facetious here, but the question asked was exactly how it was posed above and it worked on every single person I saw go through the door. It completely turned me off though. So as I walked out, the person asked me if I wanted to save a life and I turned to her and said "No." The expression on her face was priceless.