We salute http://en.wikipedia.org/wiki/Digital_signage which (currently, cos’ it is always open to change) starts…
Digital signage is a form of electronic display that is installed in public spaces. Advertising using Digital signage is a form of out-of-home advertising in which content and messages are displayed on digital signs (such as LCD, LED or Plasma), with a common goal of delivering targeted messages to specific locations at specific times. This is often called Digital Out of Home or abbreviated as DOOH.
Digital signs are typically used to entertain, inform or advertise.
Benefits of digital signage over traditional static signs are that the content can be exchanged more easily, animations can be shown and the signs can adapt to the context and audience, even interactively.
Hats off to all those who have and are contributing. Keep it real, keep it honest please.