This is what Google Inc. says about Google Talk: "They say that talk is cheap. Google thinks that it should be free. Google Talk enables you to call or send instant messages to your friends for free–anytime, anywhere in the world."
Google Talk
Google Talk is free software which enables your to call or send instant messages to all other Google Talk users anywhere in the world.
Features of Google Talk:
Gmail integration You can see your Google e-mail messages
Call over the internet You can call other Google Talk users for free!
Personal status You can set your Google Talk status to "busy" or "away"
Send Google Talk invitations It's easy to invite all your Gmail contacts for Google Talk with one button click.
Quickmail Send an e-mail to your Google Talk contacts with one button click.
Search Easily search in your contactpersons database.
Update check Google talk is automatically updated.
