Also you are able to search for search for your Google Talk contacts. See the availability and status message of your contacts and change your own status on the go.Go off the record if you don't want to store your chats. Off the record chats are not stored on Gmail.
The appeals of these web-based clients, however, are coming to a close. With the release of the App Store next week, “Google” expects to see multiple versions of instant messaging to become available as native applications for the iPhone.
iPhone users can visit www.google.com /talk in Safari.