Question: When is an iPhone like a BlackBerry? Answer: NEVER. Sliding a physical keyboard out of your pocket and onto the iPhone to type won't cut it if you actually need real keys. Switch to Verizon and get the RIM phone already.
Regardless, you should run out and buy this product for $29.99 when it ships on November 19th. It's going to be a collector's item in the museum of "Can you believe someone actually thought this was a good enough idea to put into production?"
Mobile Mechatronics, makers of the Blur iPhone mini-tripod kit, claim using the iTwinge will speed up your typing up to 40% and reduce typing errors by 70 – 80%. Could it be worth the hassle of carting this black plastic thing around?
The company plans to release iPhone apps that will provide typing exercises to help build "muscle memory" and leave a virtual keyboard in the dust.iTwinge is designed for the iPhone 3G and 3GS and weighs only one ounce. The device plugs into the bottom of your iPhone and requires no additional external power. Needless to say, the iTwinge does not "support" landscape typing modes in applications.