We’re truly sorry for today’s extended outage. If you didn’t see our status updates, we were under a large DDOS attack. This attack was large enough to have a significant impact on our upstream providers, leading to the outage. In situations like we dealt with today, we have intentionally left out technical details as to not give away anything that might open us up to new attacks. We continue to work to improve our defenses and will provide a more detailed update tomorrow.
Of course, everyone knows what a "large DDOS attack" is so I won't bother explaining it.
*And here are some new commenting rules. Every commenter must reveal their jobs and/or funding source (but not their real names).