Great app. I'm enjoying it greatly -- particularly now that I have sync working with Ubuntu One and my Win7 box. But I have one puzzlement...

Under "Settings" there is a checkbox option labeled "XML Storage Backend". I've never seen anyone mention it here. I have looked at the raw data files and seen that they are XML or at least XML-like. So what would happen if I unchecked that box? It doesn't seem to make sense that the XML files would disappear or go unused. (Where would the data be then?)

And since it _is_ an option, what's the use case for UNselecting "XML Storage Backend"?