Mobile marketing represents 1.8% of all marketing expenditures in 2009, and while this may seem like a small number, the average mobile marketing budgets are growing by 26% per year, according to research by Peter Johnson, VP of market intelligence and strategy at the Mobile Marketing Association, presented today at the MMA Forum in New York. This growth, it should be noted, is happening when marketers are seeing a 7% drop in their average marketing budgets.