Think of tiny URLs what you like but they have an advantage when sharing links with eachother.I wish dropbox would have an integrated short-URL feature in it’s iPhone and desktop app so that it makes sharing via twitter etc easier. What i can do now with the iPhone app is send an email with a linked text to someone. Why not show the URL so that i can at least copy/paste it to other apps? And why not use a short URL, so that twitter likes it? Or offer more sharing options than just email? This would make things easier with the desktop tool as well.
tinygrab and quickshareit already use short-URLs and automatically paste them into the clipboard when uploading something. I just wish dropbox as one of my alltime favorite tools would have this feature.