"Casual Bluetoothing"- there will be a point when everyone is Bluetooth enabled- PDAs, phones, laptops, Blackberrys. At this point, on the subway for example, it would be possible to detect dozens of other wireless devices and anonymously share info- games, news, photos, video. You never know what you'll get. You can check it for viruses and such first, and limit it to not accept any executable program files if you want (no games then) to protect yourself. It would be an in-person way of staying totally anonymous still, as if you were sitting in a chatroom passing around things, yet you're sitting in a live chatroom physically but still without any idea who you're talking to.......