Just how big is the market for mobile apps?

Global mobile apps will be worth $17.5 billion by 2012, according to an independent report commissioned by app store GetJar. Mobile app downloads across all types of handset are also expected to increase from over 7 billion downloads in 2009 to almost 50 billion in 2012 - a year on year growth rate of 92%. 

This would mean that the value of apps sold would be greater than the projected $13.83 billion value of CDs sold in 2012.