Mobile Gaming Revenues Growing 19% at a Compound Annual Rate

Apple says the iPod "Touch" has more than 50 percent share of the mobile gaming market.

That presumably puts the Touch in line to garner a disproportionate share of mobile gaming revenues growing at a 19 percent a year compound rate.

Where paid gaming is growing about 17.5 percent, ad-supported gaming is growing at a 39 percent compound rate between 2010 and 2014.

That is one reason Apple thinks its iAd network is going to be valuable.