It is really hard for non-qwerty keypad mobile phone users to input text into their mobile web browsers. This fact alone hinders the adoption of using the mobile web to do many of the things we normally do on the desktop web browser.
If only there was a way to save common canned responses to some datastore on your mobile phone, and simply paste them into form fields that you need to enter. I have a Windows Mobile smartphone device, and that is a feature that I most wished for. Sure… the platform supports copy and paste, but only for phones that have pen-based input. Surely, there must be a copy-paste mechanism for those smartphones that only have the joystick/keypad-based input. I have tried several mobile web browsers for my Cingular 2125 Windows Mobile smartphone device, and they all fail on providing this key feature. I tried Opera Mini (J2ME), Pocket IE, and the Opera Browser beta for Windows Smartphones, and it is an incredible chore to input text. A simple copy to datastore and paste mechanism would help alleviate this annoyance.