That's the best advice I've heard about this, ever.
As long as banks will process them -- being untraceable, banks get a little squirrelly. But no need to be worried about it as long as it works.
Thanks. Only had a denial once and that was because I forgot to write down a purchase I had made and I was out of money. My credit union offers them with no extra fee which saves $5.95 so it’s all good.
You do need to register them on-line and I always use a fictitious name and address but it does let you keep track of the balance via the internet. I know regular credit cards limit the card holders liability generally to $50 for fraudulent use but that is a huge hassle. Getting a dummy card is just easier for me and controls my spending too.