Basically,Advertising is a discipline studying human psychological activity.Advertising is to study the target audience's needs and wants,to cultivate their inherent request.While,the product mostly is ranked the second in importance.We dig out the USP,unique selling point,to fulfill the customer's benefit.
I would rather call it be-what-you-need method.New marketing concept advocate customer-oriented method,so does advertising.
Imagine you are doing research on persons with different characteristics and consuming habits,how funny and inspiring it is!