The Google Talk Gadget is a web-based module that you can add to your Google Personalized Homepage, letting you see your friends and chat with them — all on your homepage.
The start point of Google Talk Gadget was the fact that a lot of people love being able to chat with their friends in Gmail Chat and so was created the Talk Gadget to offer that experience in other places, starting with the Google Personalized Homepage. You’ll also find all your Gmail and Google Talk contacts organized for you in the Talk Gadget.
To use this gadget you don’t have to download and install software to use it.
The Google Talk Gadget looks and feels the same on a Linux desktop as on a Windows laptop, and it also works on Macs.
And if you have a webpage or blog, you can put the Google Talk Gadget in those places too, so your visitors can sign in and start instant messaging right from your page. If you post your username next to it, visitors can add you as a contact and start chatting with you right away. Like most other gadgets, you can do this by pasting a single line of code into your page, which you can find here.
You may see a film about Google Talk Gadget on http://googletalk.blogspot.com/2007/03/google-talk-gadget.html.