I am curious just how effective radio advertising is? Obviously something's working since this has been the model for some 60 years, but I'm curious just how well it actually works. For instance, it seems like you can't go anywhere without hearing some kind of car adds, whether they be adds for a brand or a local car dealer. How could it be profitable for the company or dealer when there's going to be two or three competitors in the same hour? Not only that, but I don't know anyone who is going to buy a car simply based off of a radio ad for a certain brand or dealer. The same applies for home improvement chains or the national insurance advertisers. I know there is some level of effectiveness, in fact I've seen it myself. However, the one example I like to give when I point out how effective radio advertising is was for something that you're not likely to hear about from multiple companies, and multiple times an hour. Even if it was, I could participate in all of such events, and may not form a preference to one or the other. However, when my parents buy a car, they do research on what kind they want, then when that's done they go to the closest dealer. When we need stuff for the house we go to Home Depot because it's right down the street, that's also why we like Safeway. When I was going to school, I went to Safeway because that's what I was used to, though sometimes I'd go to Wallmart if I just wanted to walk rather than take the bus, and if I needed something in addition to groceries I'd go to Fred Meyer. You probably didn't need to know all those specifics, but the point was that, while all of these chains advertise on radio, it didn't factor at all into the decision to go to them. So, how well does radio advertising really work? I would think the business doing said advertising would want some kind of return on that investment, and they won't advertise if they don't get that return.