Update: It appears that access to Facebook is back up for both the web and the Windows Phone apps. You are now free to carry on with your day.
It appears that Facebook's newest feature is "being offline". Attempts to visit the social network right now are being thwarted by a lack of stuff to load, from a "Sorry, there was an error" or "We're having trouble getting data" alerts with no new content in Windows Phone app to an apology of "Sorry, something went wrong" in browsers. Let us know, is Facebook down for you too?