There are times when typing at a flat angle is uncomfortable. It is most noticeable when using my MacBook Air 13". All of the keyboards I use, including Apple's standard wireless keyboard, are angled for ease-of-use. Contrary to standard keyboards, Apples laptop line sits flat on the resting surface.
Asking to "kick it up a notch," Bluelounge released the Kickflip just a few weeks ago. Hoping to increase productivity and ease everyone's wrists, the Kickflip does just as the name suggests: props your laptop with just a flip.