The bridge that this is adding between Google Voice and the browser is really great. It really adds a lot of value to Google Voice, because you don't end up starting a call from your browser to then have to pick up your phone. You can, if you want to, do everything from your browser.

They put the accent on Gmail but I see the value more on the Google Voice side where your computer really becomes part of it by being an end point as much as your other phones.

addendum: in my personal case, this is a serious threat to my use of Skype. And I also won't be surprised if a version of this makes it to Google TV. At least, I wish it will: phone screening and conversations from your couch, easy transfer to other phones, etc.