Forum Post by mamaoyot from http://devicegadget.com/
Take your Google Voice experience from VoIP to VIP with these hidden feature
1. Calls within Gmail
Recently, Google made it possible to make and receive voice calls right from within Gmail-yes, you can use your Google Voice number without needing to be anywhere near a phone. To get started, log in to Gmail and locate the Chat box in the left-hand sidebar. You should see a new contact called Call Phone; click it.
A small box pops up on the right side of your Gmail window displaying a dial pad, and you may be prompted to download and install a voice plug-in. Then, from the dial pad, you can dial a friend or type in a name from your Google contact list, all without a phone in sight.