This is a pretty old idea - see http://www.boingboing.net/2007/07/01/flip-text-upsidedown.html http://www.boingboing.net/2007/07/01/flip-text-upsidedown.ht... a

This is a pretty old idea - see http://www.boingboing.net/2007/07/01/flip-text-upsidedown.html http://www.boingboing.net/2007/07/01/flip-text-upsidedown.ht... and http://pne.livejournal.com/398399.html http://pne.livejournal.com/398399.html