MMS was one feature which was missing big time from the original iPhone and iPhone 3G. It was not until Apple released iPhone OS 3.x which brought this feature for the masses. The same now goes for the recently launched iPad 3G as well.
Wow! There is some great work being done in the jailbreaking community for the newly released iPad 3G. The infamous iPhone Dev Team has managed to send SMS text messages from iPad 3G using command line terminal. Even though it is early in development (no GUI), it still gets to show one of the many possibilities that you can get using a jailbroken iDevice.