Two weeks ago, Mathematics Educators had around 458 visitors per day. Just a few minutes ago I was surprised to discover that we have only 1 visitors (sic) per day. (The image below right is what I see on the right side of the main site.) Refreshing the screen or visiting it again from a different tab doesn't change it. When I visit the Area 51 page, I see 0 visits per day. (See the image below left.)
This problem doesn't seem to be unique to Mathematics Educators. For example, History of Science and Mathematics currently shows 2 visitors per day on its main site.
What's going on here?