I am a 'bit torrent' client. BT Guard says they can divert your IP address so that your computer is anonymous whilst you are torrenting: I download from Melbourne-my IP address is re-routed to Canada-then my torrent file appears to be originating from Canada to anyone who is interested in checking me out.
I purchased the software program in October 2009 for $9.25AUD (not a lot) and their policy is to automatically debit your Credit Card each month unless you cancel prior to the due date, which in my case was 25th November 2009.
I decided to cancel their product as it seemed not only pointless but illogical: anyone with a bit of IT experience knows that if the authorities really want you, they WILL find you. (I thought about all the filthy child predators out there & how easy it would be for all of them - not so!)
Anyway, I asked for confirmation of my cancellation in the first email ~ no reply.