Facebook went down again

Facebook went down on Monday, the second time in a week, for a bit. Of course the social media crisis spawned a hashtag -- #Facebookdown. This message greeted you when you tried to go to Facebook on the Web: "Sorry, something went wrong. We're working on it and we'll get it fixed as soon as we can." Facebook's iPhone app displays "Network Error." Facebook's official Twitter handle had no information.

While Facebook was down, access to websites that use Facebook authentication -- such as Strava, Meetup and more -- was affected, too.

By 4 p.m., Facebook appeared to be back up for many users.