Newspapers, for example, by and large kept their advertising rate cards intact during recessions, giving up revenue in the short term in order to preserve their pricing once the recovery came.

FORBES: Banner Year? Not Quite

Christian Wolmar, a transport historian, points out that there has been advertising on the system since its earliest days: photos from the late 19th century show cards inside train carriages advertising domestic products.

ECONOMIST: The Tube goes commercial

More deals are on the cards as other advertising conglomerates merge.

ECONOMIST: Star turn

It is heavy with advertising, for Cartier watches, Chinese credit cards, Mercedes S.U.V.s.

NEWYORKER: The Forbidden Zone

Such cards appeal to professionals and firms involved in architecture, engineering, and creative professions, such as advertising and design, that involve heavy graphics usage.

FORBES: Nvidia Deserves To Gain At Least 15%