Um, where to begin? How about a definition:
twinge n. A brief experience of emotion, typically an unpleasant one.
Funny, that's the reaction we had when first laying eyes on Mobile Mechatronics' iTwinge iPhone keyboard. At the moment, we're unclear if the iTwinge electronically docks to the base of the iPhone or if it's just a $30 (plus shipping) sleeve with Pogo-like coating for capacitive touchscreens. According to the FAQ, the ultra-low power iTwinge "uses the phones power" but doesn't require any software to work with Apple's iPhone 3G or 3GS handsets. Regardless, after 4 hours of usage an "average user" will increase typing speed by 30% to 40% with 70% to 80% fewer typing errors. Golly! If you pre-order now you can expect shipment in November. So go ahead, we dare ya. Another pic after the break.