Bluetooth does not have the 30 feet range as advertised. In fact, it's more like 10 feet, and by then the signal is so weak that it drops off. I've had experience with a flat iMac with a D-Link bluetooth adapter as well as a t68i and a 12"PB with built in bluetooth. Ive used Address Book, Romeo and iSync and they all have the same range. About 10 feet (with line of sight!).
How on earth is it possible to get a 30 ft range with Bluetooth?