This is seriously cool, and very useful. Its just as neat, but faster and more efficient then the technique I learned while working at a clothing retail store. Now the question is how the hell did someone figure out this technique?
I just found another different video of this technique. Its a longer video with demonstrations of different tops, and has a time trial of this cool technique vs the traditional technique. This video is in Mandarin though...
http://web.mit.edu/wuster/www/media/fold.wmv