So far, the killer advantage for Dropbox is it's simplicity. Just drop your files in your Dropbox folder on one computer, and they magically appear on all your

So far, the killer advantage for Dropbox is it's simplicity. Just drop your files in your Dropbox folder on one computer, and they magically appear on all your other devices. There's no upload/download bullshit, it all happens in the background. Not to mention that it seamlessly resumes transfers anytime your connectivity is disrupted, which again reinforces the ease of use "drop it in the folder and forget it" factor.