That's a nice solution, though I've gone for a markdown admin widget instead.
This one if I remember correctly: https://github.com/timmyomahony/django-pagedown
This one if I remember correctly: https://github.com/timmyomahony/django-pagedown
One unintended (and great) side-effect of a Dropbox-hosted site is that you get mirrors for free (they all update together).