Question

so what was going on yesterday; everything just shutdown...

Answer 1

I went to another site that kinda looks like this one, but from an alternate reality :)

Answer 2

Hey =). Good question. The math group has been using a new user interface for some months now. Yesterday we moved most of our older/beta site to this new user interface. If you click on "home" or our logo now, you'll see the other study groups we've launched. It's not just math anymore. You can find that alternate reality at http://retro.openstudy.com - but this is the reality we hope everyone migrates too eventually.