I also used to have a program in my 3650 i forgot the name that would automaticly fire a predefined msg via bluejacking to any device in range (it was fun to walk around with it running and see things like wall displays, demo computers in a computer store etc popping up a baloon with the msg showing, i once even had a display in an computer art exposition show the msg.; also It was useful to have people around blip if they were vulnerable to bluejacking.