[moraljto]

off-topic: how does he/she get those vertical tabs in Firefox in that screenshot?

https://raw.github.com/oyiptong/retinadisplayproblem/master/...

(warning: that is the picture that apparently breaks certain displays)

[sayhello]

That's Tree Style Tab, great for tab hoarders like me https://addons.mozilla.org/en-US/firefox/addon/tree-style-ta...

[moraljto]

awesome, thanks!