Facebook Apology for Outage (Crash, Downtime, Broken etc.)

So FB went down today. I did not notice it myself. They made an apology, which is nice of them. Posted to every person’s wall it seems.

“We’re sorry again for the inconvenience of today’s site outage. A failure of this size always involves a number of things going wrong at once, and that was certainly the case today. Read a detailed technical explanation of how it happened and how we’ve been fixing it on Facebook Engineering.”

I wonder how many of the 700 million Facebook users actually noticed?