Learn About "Word of Mouth Marketing" - Aug 2009 Spending on word-of-mouth (WoM) marketing rose 14.2% to $1.54 billion in 2008, despite the worst economic recession in 70 years, accentuated by secular and structural trends battering traditional advertising and marketing media, according to new research from PQ Media. While year-over-year growth is expected to slow in 2009, WoM spending is on pace to grow another 10.2% this year, placing it among the fastest growing advertising and marketing segments. By comparison, the U.S. economy, as well as the advertising and marketing services sectors are all expected to decline in 2009 for the first time since the Great Depression of the 1930's.