Shorthand training

Friend of mine asked me to keep an eye out for continuing education classes that cover shorthand. It occurs to me that, given the apparent rarity of such training, that a simple iPhone/Touch application to learn, practice, and take notes in shorthand might be a winner.

Then again, as I look at samples of the various forms of shorthand, it occurs to me that it's a lot of work for a dying specialty. Look at the Gregg vowels, for example.