FACEBOOK LEARNS WHAT IT’S LIKE TO GET SHUT OUT OF FACEBOOK: Facebook Is Having a Very, VERY Bad Day (Cue World’s Tiniest Violin).

UPDATE (From Ed): This Facebook outage is huge — It’s their worst since 2008, when they only had 80M users! And speaking of getting shut out of Facebook, “Was just on the phone with someone who works for FB who described employees unable to enter buildings this morning to begin to evaluate extent of outage because their badges weren’t working to access doors,” Sheera Frenkel of the New York Times tweeted earlier today.

Meanwhile, at America’s Newspaper of Record: Hackers Warn That If Demands Aren’t Met They Will Reactivate Facebook.

UPDATE (From Ed, 5:55 PM EDT): It was too good to last — Facebook is currently back online.

(Updated and bumped.)