Neat! It reminds of Google's book http://www.20thingsilearned.com/ http://www.20thingsilearned.com/ without hard covers and with only corner active. (I once had

Neat! It reminds of Google's book http://www.20thingsilearned.com/ http://www.20thingsilearned.com/ without hard covers and with only corner active. (I once had an idea of making a reusable lib based on their book's code at http://code.google.com/p/20thingsilearned/ http://code.google.com/p/20thingsilearned/, but never finished.)