We know our first instinct upon finding the PlayStation Store down would be to freak out and shred our credit cards. That's why it's important that you know this ahead of time -- the Store will be down
today from 9AM-11AM PST (12PM-2PM EST). It's Sony's own doing, not the work of any lulz-motivated cabal. Sony says that other PSN functions won't be affected by the Store outage.
It's just maintenance. It'll be all right.