Some of the most interesting methods of subtle marketing I have seen are used in television. Everyone knows that no one pays attention to advertisements in between shows. However, everyone who is watching the show is going to pay attention to the show itself. Oftentimes, a company will pay the show producer to include their product in the show, but not outright advocate for it. An easy example is soda. Some shows have their actors only drink Coke products or get excited about a new flavor/brand. This is most popular in clothing/food/drink companies because it is easy to implement and the producers can integrate it into their characters personalities without seeming suspicious. It is sort of like push marketing in terms of sheer amount of exposure, but without the risk of annoying the customer.