Blackberry user here, and to this day I defend the primary point of me continuing to use a physical, full qwerty keyboard is the responsiveness, and the user ce

Blackberry user here, and to this day I defend the primary point of me continuing to use a physical, full qwerty keyboard is the responsiveness, and the user centric design of the keyboard. Case in point of this having two shift buttons on either side of the spacebar, both iOS and the Android platform lack this logical affordance (http://www.useit.com/alertbox/application-mistakes.html http://www.useit.com/alertbox/application-mistakes.html). Great points, Sam.