Apple promotes their products all over. For the iPhone, it is promoted in Newspapers, on radio, television, the internet, in magazines, etc. Apple has showed great discipline when promoting their products. They know they dont have to try and sell more their products on the desktops of Mac's, iPods, on iTunes, or iPhones to their highest bidders. The company understands the main reason is to provide the users experience that the customers would love.
iPhone is one of the fast developing breakthrough product for mobile advertising. As more people use the iPhone for more things, there are going to be much more ads they would love to see.
