ThinkGeek feels that your iPhone needs a keyboard enough that they are putting their money into it.

Soon available through ThinkGeek will be a ‘spin’ out keyboard for the iPhone that acts as a back case. The spin will remind you of the old ‘Danger’ cell phones. In this case, the keyboard is connected to the iPhone via Bluetooth.

Pre-orders aren’t being taken, but you can sign up for an email when ThinkGeek starts shipping. I’m really on the fence on this one. I do a lot of text entry into my iPhone and think this ThinkGeek option will be really cool (shown as $49.99 US) but when the case is closed it completely covers the camera. I also take a lot of pictures so that is a negative… I’ll wait to pass judgement till I actually have one in my hand and will let you know.