If you have a blog or a website, you can chat with your readers using the new feature called Google Talk Chatback. To use Chatback, you need to have a Google Talk account, but your visitors or readers need not have it. They can chat with you without having any Google account.
A Google Talk chatback badge will let visitors to your web page chat with you. They’ll be able to chat with you whenever you’re signed in to Google Talk.
Chatback uses the web-based Google Talk Gadget so your visitors don’t need to download anything. It opens in a new window so they can keep chatting with you even if they browse to other pages.
You can also change your status and screen names in the Chatback. Click here to create a Chatback for your blog.