I've just made my first Google Voice call from my web browser and called my parents in Italy. Call quality was good, there seemed to be no latency.

In GMail, in the Chat section down the left hand side of the screen, a "Call Phone" option appeared today.


When clicked, the option gave me a chat pop up with a different interface from the usual one.
I used my trial credit ($0.10) and tried a couple of test calls from here in the UK to Germany and Italy. Both times call quality was good and there was no latency.

I also topped up my account with £10 pounds credit through Google Checkout. Easy Peasy.
I'm happy Google Voice has finally arrived in the UK. This will shake up the VOIP market more than the Tesco Internet Phone service did a few years ago... How long before I'll be able to use full Google Voice on my Android phone like my friends in the USA do?