Bluetooth is Dead, Long Live Bluetooth
I've been using bluetooth for its mobile data networking since about the time of its death, and I really was concerned for a bit -- there weren't many bluetooth phones from which to choose, and the ones that did exist were considerably more expensive. Today, it's much more common, since everyone wants the wireless hands-free kit. My next car will probably have bluetooth as well.
I'm very pleased that the personal-area-network has finally become useful for the normal people. Now I just hope that the manufacturers don't let the data side of the devices slip in favor of only supporting voice services, like some errant carriers try to do.