Very cool. Maybe Go will win some people back to the strongly typed language realm. Having the compiler acts as a safety net is pretty awesome. Much better than having your code blow up at run time with dynamic languages.
Beneath the bleeding edge of "what is cool" and "what cool companies use" there is a very large iceberg of people and companies doing/using things that stopped being cool a decade ago.
Although I'd be amazed if Go won over a significant portion of the PHP/ASP crowd, given that they have already self-selected out of using Ruby, Python, etc. for web development instead.
I suppose you could argue that Go is a good fit for PHP/ASP programmers who have really tuned their applications for performance, but I strongly suspect they're a small minority.
Also, dynamic languages has a tendency to "blow up" in less serious ways..