Nuance Communications Inc. has recently unveiled a new voice to text or diction that is available for iPhone users.
All that is required of the user is to speak a message in the phone, and then hit send. I haven’t tried it for myself, but generally, applications like this don’t work as simple as companies would like you to think.
Still, if it makes Twitter and Facebook updates easier, I say, let it fly. In the meantime, you should be able to pick up the Dragon Diction for free, for now.