Hacker News Reader

Apparently with my Retina MacBook Pro with 10.8.4 and Safari 6.0.5, I "need to upgrade my video drivers", according to the site...

Sadly, Safari still doesn't support WebGL by default, although you can enable the Develop menu in the prefs, and then enable it in the Develop menu.

Even if you do: it runs super slow on my Mac Pro.

I can confirm this. On Chrome, though (same machine and same webkit, I guess) it runs smoothly.