I did it – and it wasn’t that painful. The iPhone app is a bit buggy – if you log out of Dropbox and try to log back in, the fields for email and password are messed up. Also, you have to type “Enter” after typing your password, you can’t just hit the log-in button. If you don’t do it in that order, it tells you that your email and password combo aren’t working. Aside from that, the setup for Dropbox was pretty straightforward, and is described clearly here.
I’m still not sure how useful this will be for me, but I’ll try it out for a while. It’s nice to be able to search quickly by keyword. I don’t know how often I’ll actually input something via iphone to upload to Dropbox – I guess it will depend on how easy it is. One thing occurred to me as I was setting it up was that if it does work out for me, I will probably stop using Mercurial. And to be honest, using Mercurial for my Org-mode files was a bit weird – sort of overkill. Really just a way to try out Mercurial.
Here’s a little sample of what it looks like on my phone – from something I did back in October.