Though his firm succeeded in part through stunts, Mr. Edelman conceived of public relations as an overarching information function of which advertising was a subset.

WSJ: Public-Relations Pioneer Began With 'Toni Twins' Stunt

Decaux and local government have resulted in a proliferation of bus shelters and other street furniture whose sole function is to display advertising.

ECONOMIST: Letters

The upper screens function as digital signage, bringing in advertising revenues and allowing the Beacon to provide its other functions free.

BBC: New York's phone boxes get new lease of life

Is the function of the unified company the service of its users and advertising customers, or the service of the future itself?

FORBES: Future Tech

You and Your Applications may not collect user or device data without prior user consent, and then only to provide a service or function that is directly relevant to the use of the Application, or to serve advertising.

FORBES: Congress Has More Questions over Apple iPhone Privacy

Is the function of the unified company not, in fact, the service of its users and advertising customers, but the service of the future itself?

FORBES: Google Is Really Three Companies, All On A Roll