I have considered others export options, namely flickr. I put that one on hold to work on other things because you can use e-mail to post to flickr if need be (though not an optimal solution). I might do a quick thing to make flickr email rather than the API, though.

I hadn’t thought about drop-box until someone mentioned it recently. It’s certainly something to look into.
Tiny link: http://taii.cc/4D