here is a better link that describes better how he did it, without a paywall.
I take advantage of credit card companies all the time. My favorite thing to do is this:
You know when you are at a department store and they offer you a massive discount on your purchase if you get their card? If I am already there making a massive purchase (I have a large family) ... I get the card, receive the deal, then simply reach into my pocket and pay the bill with the case I was going to use, then cancel the card.
...
After about 6 months or so (about as long between large purchases) you can do the whole thing again.
lol
—” without a paywall.”
A minor note:
No paywall with the link in #2.
Yes, your link had some additional information.
Thanks