Last year, it totaled an estimated $8 billion to $10 billion in the U.S. alone, nearly doubling the 2012 total, according to stats cited by mobile ad platform StartApp.
In-app ads are the fastest-growing sector of the mobile advertising market. They are forecast to reach $17 billion by 2018, up from $3.5 billion in 2013.
StartApp, which obviously has an interest in highlighting the growth of mobile ad spending, cites a Bank of America Merrill Lynch prediction, which puts U.S. mobile ad spending at $18.3 billion next year.
(article by F.Donovan)