Oh fun.
Only have my CC info stored on 3 sites. Amazon, Steam & PSN. After this, only two sites and if I have to change a new credit card, none. Been changing passwords on email and some other sites to be on the very safe side.

And oh, now I got to keep an eye on my credit card info. I sincerely hope they offer something tangible in return for these troubles, downtime is one thing, but having personal information and especially credit card information stolen is a damn big nono. A one or two year free membership for Playstation Plus or a coupon to buy PS3 games (preferably not from PS Store since it has a damn limited selection compared to most retail stores).