Google Talk is easy and intuitive to use. All you need to make free calls is an Internet connection, a microphone, and a speaker. After you download Google Talk, sign in with your Gmail username and password. Invite your friends to download Google Talk, and once they do, you'll be able to talk or IM with them instantly.
The rumors sure got this one right. Google Talk is already, and will continue to get Google a huge amount of publicity. It sure seems like the love affair with Google is cresting. Those pointing out problems (privacy...) are increasing. It will be interesting to see how much longer Google can retain the golden touch.