Amazon's Dark Cloud
Intuit isn't the only cloud provider guilty of an outage. Amazon has a couple outages under its belt, actually, but one of the biggest happened in April 2011 when its Elastic Compute Cloud and Relational Database Service went kaput, dragging down with it popular sites including Foursquare, HootSuite and Reddit.
The outage lasted four days. Amazon issued a formal apology (buried at the bottom of a lengthy document explaining the cause of the crash) to its affected customers.
"Last, but certainly not least, we want to apologize," the document read. "We know how critical our services are to our customers' businesses and we will do everything we can to learn from this event and use it to drive improvement across our services."