Alot of bluetooth stacks offer a virtual serial port, must like the IrCOMM extention of IRDA Ir DATA standard did for infrared. Of course not having to line the damn devices up is way cooler and I can chat and send SMS surrepticiously in meetings using my Palm, my mobile stays in my pocket and quiet and innocent-like :) Coolest thing is the guy below me with his bluetooth Palm, we can scribble pictures using the bluetooth whiteboard!