Kindle owners may be interested in the following which I have shamelessly pinched from a post in the Amazon Kindle forum. 
Revenue related to 3G wireless access and delivery and software upgrades is amortized over the average life of the device, which is estimated to be three years.

Revenue related to 3G wireless access and delivery and software upgrades is amortized over the average life of the device, which is estimated to be three years.



