Cloud Hosting Single Point Of Failure - Your Credit Card
pud.com
pud.com
As an aside, this is a decent argument for a better email client. Those messages should've been highlighted instead of hiding among the chaff.
You can use the temporary one for up to 12 recurring payments, which means you'd have to update your payment info for a bunch of services every year, and each card is only good for one merchant, so you'd need a different one for each.
It may be better to just get a separate card exclusively for recurring services to reduce the chance that it gets flagged because of travel or other suspicious activity (Christmas shopping, etc.).
This does seem like a key aspect of the "service" component of SaaS, in particular for cases where data is deleted or is otherwise difficult to restore (i.e. recovery involves more than just a new, valid credit card number). Maybe we need some sort of SaaS evaluation or ranking system that took these types of policies (grace periods, etc) into account...
I've had similar situations with Amazon, Rackspace, etc. when my card expired, and they all gave several weeks of leeway in updating to new details, as well they should.