Evernote updated Skitch a couple of days ago and removed
WebDAV. They were nice enough to provide a download
of the old version from their site.
I made a Ruby web app you can run for free on Heroku. Just
plug in a Dropbox API key, and you can point Skitch's WebDAV at
it and it will store the images into your dropbox!
It uses the Dropbox App Folders, so when you give it permission to
use your Dropbox, it can only see and use the
More apps should do that!
There is a problem with Skitch's WebDAV and the clipboard. It verifies the URL exists after
uploading. Unfortunately this means you can't return Dropbox link since
it is just a hash / number. Also if you return a header location redirect,
it will not accept it. So instead it copies to the clipboard a link to a
page that redirects the user to the right Dropbox url.