We just came across a great infographic at Intuit's Small Business blog:

As adoption of mobile smart devices (smartphones, tablets, and so on) has accelerated with consumers, so has it among small businesses. More and more small businesses are now choosing to liberate their operations from the office desk and take advantage of the anytime, anywhere power of mobile. Today we take a look at how small businesses are relying on mobile technology. Click the infographic for an enlarged view.

We think they've overlooked text messaging, but still, it's a neat graphic: