Google FeedBurner is down: SaaS isn't mission-critical ready

When I subscribe to a service, I expect it to work. Went to check my FeedBurner account, only to be informed I'm missing a "spoon":

For all those businesses subscribing to Salesforce.com, NetSuite, SAP's Business ByDesign, and so on, let this serve as a warning. If Google can't promise 100% reliability, neither can anyone else. SaaS may be here, but it's not ready for mission-critical applications.

Note to error-page authors at Enterprise 2.0 companies: the fact your application is down and interrupting your users' work is neither funny nor cute.