As to worth, it's worth it to those that use it.
I see the Cicero unit in out of stock. http://www.gizmosforgeeks.com/2008/04/10/super-mini-usb-20-bluetooth-dongle/ is another smallish unit.
I forgot to add bluetooth to my new tablet PC. Even though it won't ship until the 23rd, somehow it is impossible for HP to help me out and add the $25 option.
I want to get GPS at somepoint.
should I get a USB/expresscard gps unit or bluetooth unit then add gps to that.
Besides headphone/cellphone use, is bluetooth worth it.