According to Ad Age, word-of-mouth spending has increased from $76 million in 2001 to $981 million in 2006 and is expected to grow to approximately $3.7 billion by 2011.
Still, the discipline accounted for just 0.4% of the share in the $254 billion marketing-services category, a grouping that includes direct marketing, branded entertainment and public relations, among others. If PQ Media’s analysis is correct, however, word-of-mouth marketing won’t stay small for long: The field grew 35.9% in 2006, far more than both the overall marketing-services category (7.7%) and the U.S. Gross Domestic Product (5.7%).