Well, I'm in Canada and it works for me; I just called myself. Google Voice [1] now also works for me and displays my call history, but it won't let me upgrade.

[1] https://www.google.com/voice

I'm in Australia and just called myself from Gmail (not free though).

I'm in Germany and I can see it, but it's just not working. I can dial but allways get the message that my call could not be completet (tried to call US, Canada and Germany). My fault, Googles fault or does it show up without working on purpose?

I'm in Japan and can see it. However, I also have a Google Voice number which was automatically associated with it. I suspect that may take precedence over geographic location

Yep, can't see it either (I'm in Finland).

This would be useful for calling my own phone to find it from my apartment :) (I dont have skype open usually).