So far, there are only a select few of word processing applications on the Iphone.  Those select few charge a lot to do so.  If Adobe could create an application that would allow iphone/ipod users to edit their documents, it would draw a lot of people to the service and acrobat.com.  Adobe could also make it ad supported to create revenue and to keep the cost free.

The application could either be accessible from the apple app store, or through the iphone/ipod web browser.  A lot of people want to be able to edit their documents on the iphone/ipod touch, and this would be an easy way to do that.  People will sign up for any service that lets them edit their documents for free on the iphone/ipod touch.