Google Talk is an application on a Web site with functionality similar to the MSN program and can also communicate by voice through the Internet, also known as VOIP (Voice over Internet Protocol), which sound quite good. Sounds obvious, do not delay. Although they talk across the continent. For real-time communication. You can send instant messages. No need to download. Played from any computer. That the internet has also played with the group chat. To share files and talk with the voice.