The Wacom tablet computers sells in the thousands, iPad is going to sell in the millions. There is nothing like a wacom for drawing with hi quality, but I'm sure Apple realise a "notebook computer" needs a pen and will add it in the future.<p>The capacitive stylus has very poor resolution, and is difficult to contrast with the part of the hand that you use for support on the screen. It would be simpler to use an optical,sound, radio or inertial add on.