Why? Because i want the beauty of an open platform like the n800 with the convenience of being able to talk to people using my cell network. I am not always in a spot that affords thw bandwidth of skype and that is why i do utilize the internet on my phone using bluetooth. It is just for convenience purposes as i it would be great to have the tablet as a carrier agnostic way of talking on your mobile network. Based on the other replies I'd say i am not alone in that desire.