Tethering works 100%, just paired my 3GS to my MacBook thru Bluetooth and sent to Settings > General > Network and flipped Tethering On. MacBook recognized asked me if I wanted over BlueTooth or USB, I said Bluetooth and right now (even though I have Wi-Fi) I am testing the network. So far so good.
MMS so far, is only a bag of hurt
Edit - Pic or it didn't happen
i setup my bluetooth between iphone and macbook but cant keep it connected... keeps disconnecting
help