A new version of Google Talk is now available for the iPhone and iPod Touch browsers to let users not only communicate via Gmail but also keep in touch with quick bits via Talk.
Users need to use Safari on iPhone to get to Google Talk. When you navigate away from the page on your web browser, status is set to unavailable, and the session restarts when you return. So, it's not as integrated as a downloadable app, but it?ll do for a quick fix.
You can select from a list of the people you talk to the most, search your contacts, and manage multiple conversations.