They may call it “bluejacking” but this video has real life examples of bluesnarfing – taking control of someone’s mobile phone to make premium rate phonecalls over Bluetooth without them even realising.
According to Wikipedia “Blue-Jacking” is:
the sending of unsolicited messages over Bluetooth to Bluetooth-enabled devices such as mobile phones, PDAs or laptop computers, sending a vCard which typically contains a message in the name field (i.e. for bluedating or bluechat) to another bluetooth enabled device via the OBEX protocol.
See www.bluejackq.com for info on all things bluetooth.