Board Thread:Off-Topic Discussion/@comment-28398720-20161007132521/@comment-28398720-20161007192110

My case? It is just a friendly notice, to those experiencing issues in the last day+, that they are not alone.

I assume that you aren't experiencing any issues, because they are hard to miss it.. Its usually presented by glitchy interface, showing as signed out, being unable to comment(various errors) and or seeing old cached version of pages. Or when trying to edit the error "Our main datacenter is down, you are accessing our backup".

You can see some stuff comments about it here.