Sometime in early January, it appears that Jack's blog suddenly started malfunctioning in certain browsers. Here are the ones I know about:
Firefox 57.0.3 Linux: OK
Firefox 57.0.1 Android: Usable, but inconvenient layout
Chromium 57.0.2987.98 Linux: Usable, but ads in right sidebar don't display properly.
Chrome 63.0.3239.111 Android: OK
Samsung Internet 6.2.01.12 Android: Broken, unusable
If you folks can add a few more data points, I'd appreciate it. Check this link:
http://www.thesurvivalpodcast.com/Thanks!