Our Grand Central account magically turned into our Google Voice account the other day, and I couldn't be more pleased. Google took the robust look of Grand Central and made it look as simple as Gmail. I can easily browse call history, send a sms or update our voicemail. I'm really excited to see how well the voicemail transcript will work also, and if it will be offered with recorded calls. The most popular feature might just end up being the call widget; "You can allow others to call you from your website or blog by adding a call widget to it. Visitors to the website can click the widget, enter their phone number, and Google Voice will call them and connect the call to your Google number."
You can also call out of the country with competitive VOIP rates. Wait a minute...Google might generate a large revenue source other then ads!?