GitHub's CSS Performance (2012)

Nice post. With expanded use of css3 features (gradients, shadows etc...) this will probably become more of an issue, but I hadn't really considered the impact that compile to css languages are having.

With the dynamic nature of the DOM, it's going to be very difficult to automagically improve selectors (that x% unused figure only accounts for the current users actions, not potential actions)

Anyone know the mechanics of what's involved with auditing and graphing CSS sizes with Graphite? What's instrumented and when is it logged?

only the slides? audio or maybe a video available?

Have to click a button for a single line of text? No thanks.