Yes it will XD. No kidding.
What he was trying to say is that Xbox Live has a promotion that if you buy 2000 points with an American Express Card, they will also give you 3 months free of Gold Membership.
The rest of the yadda yadda (the part that makes you WTF) means that to do that, you have to put your Credit Card's information in your xbox's account and well, there has been instances where people get their account's hacked and your credit card raped. So be careful those "free" 3 months don't cost you more than you expect. Plus doing the "rain dance of service protection" while "jumping through fire-laden hoops naked" never hurt anyone (maybe that last one has XD).
BTW, I don't know if this offer is still available.