Earlier quoted context omitted.
Another "feature" would be the ability to use it without dropbox--save functionality removed. I don't have my dropbox password handy, so the app is completely unusable. (HTML"5" database/ javascript localstorage?)
BTW, I'm the author of this software. So I've been trying to figure out how to save things locally for awhile. I realized that HTML5 has a File System API which in Chrome 9 can FINALLY write to the local SANDBOXED environment. This feature is planned!!
The FileAPI is quite useful. I make use of it a lot in my app these days.