I'm super paranoid about this... I used the Visa test number and a fake address as noted earlier and it was suggested to me that I should at least write a cancellation letter to the ECA. But what may happen if they somehow "don't receive" the letter?
I guess I'll pass on the portable drive then... I was looking into an external hard drive to backup my PS3 hard drive for its eventual upgrade from 40gb to 250gb... Hard drive prices never seem to change when I look at them though.
=/