By turning the desktop into a three-dimensional space, users can arrange things more naturally and creatively. They can pile things up, just like they can on a physical desk. And it sound like it may be future of computing , being the reason for acquisition by google according to my review .
Whats more special is that it is compatible with Mac and Linux [ windows too LOL ]
Posses an undo button so that we can just undo whatever we have done previously.
change the icon of 'bump a folder' at the top right corner of a Windows explorer folder after its bumped. It still shows bump a folder even after you have.
Check this tutorial :