Their first project looks nice[1]. Hopefully, they'll do similar things in the future.
That list of staff does worry me, though. All of their Twitter streams are filled with counterproductive outrage. To give one example that's related to HN: After Y Combinator posted about diversity[2], @_danilo misconstrued Sam Altman's words to a cynical caricature[3]. Later, @_danilo got in a flamewar with Sam Altman[4].
It'll be great if GitHub can get these people to spend less time being angry and more time working toward productive ends.
1. https://github.com/blog/2037-github-is-a-proud-connecthome-p...
2. http://blog.ycombinator.com/diversity-and-startups