So far Twitter users have gotten by with Direct Messaging when they want to be more intimate with their friends. But what if they could do Facebook-chat style instant messaging? That’s the offering today from Bonfire.im, a brand new disruptive startup which promises to change the Twitter experience in quite a fundamental way, by adding IM-syle Presence. Suddenly you could now know if your friends were online or ont. However, they hope Twitter will like this new plugin since it keeps users stuck to the web site. That means ad dollars for Twitter.