The only reason the iPhone has bluetooth is so it can use bluetooth headsets. The iPhone does not use bluetooth for data syncing or any other functions, just for headsets. Hence, it would be kinda pointless to add it to the iPod touch. Not to mention that transfer speeds would be around 12Mbps when using the latest version of bluetooth (2.0+). It would take around 10 minutes to fill 16GB of data. This is fine for PDAs as you normally sync minimal amounts of data but not for a media device.