Gmail learned to Talk. Now Gmail accounts are automatically enabled with chat features. You don’t have to do anything special, it just works. See when your friends are online and decide for yourself how you want to get in touch with them. Email and instant messaging don’t have to be so different. And why should you always have to remember whether something important was said over email or IM? We’ve made it easy for you to save chats, so you can search for them, print them, even reply to one over email.
Leave it to Google! This is an odd feature really, because if you wanted to chat with someone bad enough you could hop on IM. I suppose it could be useful if you are on someone elses PC, or maybe I’m actually missing the end goal here. Either way, you can read about this future feature here.