“Amid a sharp downturn in global advertising spending and a decline in traditional out-of-home advertising in 2009, digital out-of-home media is among the fastest growing media in the world and will continue on an upward track in 2010, according to a new forecast from PQ Media, the leading provider of media econometrics.”

http://www.pqmedia.com/globaldigitaloohforecast-2009-read.html