Does Google really use Go very much, though? I gather that the amount of Go software used at Google is dwarfed by other languages, it's just that nobody feels like writing a million articles about how awesome it is that Google uses Java.
The amount of Go software used at Google is dwarfed by other languages because those languages (C++, Java, and Python) have been in use for 10-15 years.
Go is definitely picking up steam, and there have been a couple of fairly high-profile projects talked about publicly (the dl.google.com rewrite from bradfitz and YouTube's MySQL proxy)
I've heard (from a friend working at Google) that Go is actually used a little bit inside Google. Obviously not as much as Java, or even C++ and Python. If Go survives I figure it would probably be used outside Google more than inside. After all, it's basically Java optimized for shorter time-to-first-demo, so it's best suited for small projects. Then again, programming languages rarely rise or fall based on merit; most times it's a matter of politics, hype or coincidence. The same will probably be true for Go and Dart.
