Tiny Bluetooth USB adapter for your notebook PC

If you want to use your cell phone as a wireless modem for your notebook PC, but your notebook doesn't have a built-in Bluetooth radio, here is the next best thing.  Circuit City has the Kensington USB Micro Bluetooth Adapter on sale for $19.99 after a $10 mail-in rebate.  It is so small you could leave it in your notebook's USB port all the time.