Digital signage growth sparks metrics push

Advertising Age: Double-digit growth in out-of-home digital advertising means it is time for organized metrics — no easy feat for a market that includes everything from elevators to urinals. PQ Media expects out-of-home-video spending to increase to $1.28 billion by the end of 2007 (up from $1.1 billion in 2006), with an additional $365 million for digital billboards and displays.

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