This idea is really simple. Even if you can maximize the area with sharp corners it might not be the most favorable surface for us to look at. Since many of us look at computer screens all day long why not have rounded corners for our rectangular surfaces. For the desktop I provided my rounded Ubuntu MATE. View the image in full screen for the maximum effect. Click once on the image and in Firefox press F11. Pretty cool.
More ideas at http://peroglyfer.se/