Partly out of necessity and partly for learning I'm looking to take advantage of iPhone 3.0's bluetooth APIs so that my iPhone can act as a number pad for my macbook. There are apps that already do this, but they work over the WiFi network since iPhone < 3.0 didn't allow bluetooth to be used for such things.
I'm sure it's extremely simple if I could just find the specs o_O
EDIT | I've taken this discussion to the iPhone developer forums, don't worry about it