I know about GTalk, and have used it in the past, but nobody uses it, possibly because nobody knows about it. The extent of most people's interactions with GMai

I know about GTalk, and have used it in the past, but nobody uses it, possibly because nobody knows about it. The extent of most people's interactions with GMail are the Inbox and the Send Message workflow. Few people bother setting up contacts in GMail (it's all in their phones), and even fewer will actually click on a contact to be able to see the "Invite To Chat" button.