A lot of misinformed people here. You don't need a credit card to register to this MMO, or WoW, or any other I've played. You can use paypal or a timecard without giving CC information. Also, canceling your subscription wipes your billing information from their databanks to ensure you are not mistakenly billed. CC info is NOT necessary.
The point of this registration seems to be to familiarize people with payment options, seeing as how you can cancel it at the end of your first 30 days without being charged.
This policy GREATLY inconvenienced and annoyed me; I was planning to not get a time card until the end of the month, as I'm not sure if I'll still be living here or having internet at that time. This is a bad business practice. The fine print of my product key said that the cost of subscription was included in the original purchase cost, therefore, EA misrepresented their policy with this move.