Is $147 Billion a year enough for you? by Chris Trayhorn, Publisher of mThink Blue Book, March 3, 2009 That’s how much will be spent on interactive advertising worldwide by 2012 according to The Kelsey Group’s Annual Forecast. Interactive Advertising Revenues to Reach US$147 Billion Globally by 2012, According to The Kelsey Group’s Annual Forecast Filed under: Revenue About the Author Chris Trayhorn, Publisher of mThink Blue Book Chris Trayhorn is the Chairman of the Performance Marketing Industry Blue Ribbon Panel and the CEO of mThink.com, a leading online and content marketing agency. He has founded four successful marketing companies in London and San Francisco in the last 15 years, and is currently the founder and publisher of Revenue+Performance magazine, the magazine of the performance marketing industry since 2002.