Have you ever envied people who sit in the coffee shop with their thumbs blazing as they text away on their mobile devices? As an iPhone/iPad person, you have been out of luck if you want this form factor--until now.
Let me introduce you to the nifty, new NUU Mini keyboard. It is really meant for the iPhone, but I slipped my iPod touch 4 into it, and it works just fine. It has a little slop room, but you can shim it up if it really bothers you.