Most of the corporate offices block gtalk along with other messengers. With this trick, you’ll be able to access google talk, MSN, Yahoo and ICQ messengers in the offices, schools or any other places where these messengers are blocked for use. You don’t need to install any of these messengers on your system. It can be accessed through any modern browsers.
Visit any of the below listed websites to start using gtalk and other messengers. They are the same services hosted on different websites.