Went to buy something. Can't use my MS points (*rolleyes*).
Fine, I'll use the Paypal account that is connected to my Live ID. Can't use Paypal.
Fine, I'll add a credit card. Go to Zune.net online. Helpfully, even though I registered for Zune with the same Live ID as Xbox, the address change I did on Xbox like more than a year ago didn't propagate over to the rest of my Live ID so I have to update my address first. Okay.
Now, to add the credit card.
Error, please try again soon.
Fine, I'll try the Zune application.
Fine, I'll try a different credit card.
No, there wasn't anything wrong with the first credit card. No, there wasn't anything wrong with my address.