A very useful and interesting article but beware of item 15, using Bluetooth with Skype. It is very, very difficult to set up Bluetooth with Skype, particularly if you are using XP SP2 and the Microsoft Bluetooth drivers. Have a look at this thread in the Skype forums and you will see just how much trouble people are having.

It seems that if you buy a headset and dongle specifically enabled for Skype you will get all the correct drivers and everything will work, but using your existing one will be fraught with difficulties.