Thanks for all the suggestions on this. A couple of people mentioned Editorial, and that does indeed seem very powerful. Like MobileOrg, it can synch with any particular Dropbox folder, so that part is pretty transparent.
I don't know what it would take to add org-mode support for this, but it does already support Markdown, including live previewing and exporting as HTML or PDF, so it may indeed be a very useful tool. Thanks! -pd -- Peter Davis www.techcurmudgeon.com www.timebums.com