User blog comment:Rappy 4187/Technical Update: October 19, 2016/@comment-126761-20161021163319

FYI: there is currently widespread disruption across the internet today due to a DDOS attack against some important web infrastructure. This may affect your ability to view our site.

There's some background info about the issues on http://www.bbc.co.uk/news/technology-37728015 and http://gizmodo.com/this-is-probably-why-half-the-internet-shut-down-today-1788062835