The overall revenue from both paid and ad-supported downloads and virtual goods is expected to increase from $4.1 billion in 2009 to $17.5 billion by 2012. But the mix will change over the next two years: The report found that advertising-based revenue accounted for about 12 percent in 2009, but by 2012, advertising is expected to generate 28 percent of revenues.
via Evidence That Apple Is Onto Something: There Are 38 App Stores, And More On The Way | mocoNews.
