[leetrout]

Actual title:

"Between the Lanes: The Sound (Proof Booths) of Silence"

Is this actually by Valve employees? Or just with Valve's funding?

[VoidWhisperer]

According to the text under the first image:

"... a blog feature where we let members of our development team walk through some of the challenges, bugfixes, and occasional happy accidents we encounter while working on a game as unique as Dota, and an event as unique as The International."

It appears to be from their team's experiences with setting up 'The International' up till now