No, I mostly was referring to the ability to drag and drop files or edit files without having to first download them onto the hard drive, then delete the original downloaded file on the computer.

Let's say that I have a word document that I'm working on that I don't want anyone else seeing. I'm at my friends beach house for the weekend and I'm using his laptop to work on this document. As it is right now, I would have to log in to the Web UI, download the file, work on it, save it, upload it, then "delete" the original file which I downloaded to his laptop (and I think we all know why I put delete in quotes). With a thumb drive app, I could just plug it in, double click on the file I need, edit it, save it, and eject the drive when I'm done.