Another secret is to close the card before u have to pay the yearly rate, and reopen it as a new care 6 months later.
frownded upon, because they could easily see that and deny you for future services but if it works go ahead and do it.
Every card has these promotional deals and you could easily make sign up for 5-6 cards a year (if your credit is good) and make up to 100-200 a deal/credit card. I prefer not to deal like that as I don't want them touching my credit and having cards open/cancelling cards as that affect credit. (although, outside of credit cards I don't believe in credit anyway lol).
