Apparently youtube is: http://code.google.com/p/vitess/
as well as heroku: http://blog.golang.org/2011/04/go-at-heroku.html / https://github.com/ha/doozerd
edit: more here http://go-lang.cat-v.org/organizations-using-go
as well as heroku: http://blog.golang.org/2011/04/go-at-heroku.html / https://github.com/ha/doozerd
edit: more here http://go-lang.cat-v.org/organizations-using-go
(dont have time to watch it right now)
Interesting talk by the way.
Porting large projects is lots of work, especially when there's plenty of stuff to do that directly impacts the customer. New projects are a different story.
I recall reading somewhere that Go was used for some other internal projects, but never heard what exactly for. So maybe it was just someone talking about some greenfield "20% time" projects or something.