For anyone who has read the first UIX whitepaper on designing mobile commerce applications, here is something that further backs up the claims made by sources I cited in that paper:

http://www.emarketer.com/blog/index.php/mobile-ecommerce-investments-pay-2011/

Whenever I read an article such as the one linked above, my belief is further affirmed that mobile devices will become more and more a part of daily life to the point that it will become a major tool for more than just communication.