Should I release a tutorial on how to do this?

So since 2011, I have had an account with shopathome and I have a deactivated credit card on my paypal. So I use the coupons that I get online and use them to get "cashback" from this website. I "pay" for it with my deactivated credit card and it registers as failed but I still get the cashback from the coupon and I receive a check from them that I can cash at a local bank and get money. Dunno If anybody else has been doing this but just wondering If I should release a tutorial on how to do this.

Note : This is technically Illegal, so use at your own risk If i release the tutorial.

proof