By the way, to my knowledge dropbox doesn't provide drag-and-drop of files into and out of the browser window, which I see as kind of a key feature for this typ

By the way, to my knowledge dropbox doesn't provide drag-and-drop of files into and out of the browser window, which I see as kind of a key feature for this type of service. I know it's possible because gmail lets you drag-and-drop an attachment into a message in chrome...