Advertising is the means by which persons and groups of persons (also called companies, corporations, countries, etc.,) communicate ideas to an audience. Usually the idea is that some need/want/desire will be met by acquiring some certain product (or membership in that group.
Some make sense. Many do not. But who could turn down the Robo-Suit 3000?

The Ultimate in Eco-Friendly. Go Green! Or beige, maybe.
Vaguely related: Also vageuly related: Comic Book rack on Mackinac Island, Lake Huron