David Hall
Apps

Consumers are also predicted to spend US$6.2 billion in 2010 in mobile application stores and growing to US$29 billion three years after. Furthermore, free applications are expected to continue to account for an ever greater share, growing from 82% of all downloads in 2010 to 87% of downloads by 2013. In 2010 alone, apps advertising revenue is expected to generate US$600 million worldwide.
 
Many free applications derive their revenue from advertising. This is typically done with banners as well as full page advertising.