There's a problem with Facebook.
It is global.
This is a big deal.
This is the first time Facebook has suffered a widespread outage which has lasted for more than a few minutes.
Mark Zuckerberg, Facebook founder and chief executive was famously quoted as saying that the social network would never go down, it would never crash.
Fortunately everyone is keeping calm and not overreacting.
Oh well. There's only one thing for it.
It's back! Phew. We can all get on with our lives now.