Taken from this excellent Overview
- Apfelwiki (put a fish in your ear)
- A balanced overview over at the Seattle Times
- The new SDIO card from Toshiba, endlessly rebranded for Palm and Pocket PCs:
- The Bluetooth filesystem (btfs) for Linux - a very neat approach to the problem of manipulating Bluetooth devices from the command-line
- HOWTO/Use a Bluetooth Headset - untested.