Facebook is using D in production starting today

[Tourist]

On Friday, 11 October 2013 at 21:24:01 UTC, Adam D. Ruppe wrote:
> Wow, the reddit thing is going absolutely nuts. I wish reddit's 
> format was more readable, it is so hard to find new stuff among 
> the mess of a tree layout :(

Agree.

You might want to try a userscript I forked, which:
1. Highlights unread comments.
2. Allows to navigate through unread comments with Ctrl + Up / 
Ctrl + Down.

http://userscripts.org/scripts/show/179121