By advertisements I include: not only radio-television-print ads & commercials, but a sign that says "Pepsi-Cola", a product placement on a TV program I am watching, a sign "Andres-sen Moving" on a truck going by.

I live in a rural area. Someone in the city may see a lot more, but I spend more time on my computer, and I watch a fair amount of TV, so why don't you interview people around the world after spending a day counting how many you see yourself?

(Not me, I just had 2 teeth extracted.)