I have no idea how did they knew this, but Bluejacking is really popular over here. Yesterday, while I was on train, the man sitting next to me was watching some porn videos he just received from another guy on the same trailer. Hunter Heaney, and his friends, have developed CrowdSurfer, which is a social networking "location-based Bluetooth application." I'm not quite sure if this thing would work out here, because most people, if not all, don't want others to know if they are sending or receiving files, especially most of these files are porn and other crap. # »