According to a study by Juniper Research, mobile ad spending is expected to rise from the current figure of $87 million in 2010 to $893 million by 2015. While ad spends will increase by a factor of ten, download and in-game purchases are expected to be ten times that.

“Angry Birds has been a huge hit over the last year on the iPhone since its launch; but arguably its relative impact, in terms of downloads, has been bigger on Getjar and, more recently, on Android Market, as a result of offering the game free with ads,” said Juniper’s Daniel Ashdown. “Users get a great game for free, but advertisers get significant product/brand exposure; the same is true of mobile games as marketing tools.”

Source: JuniperResearch.com