There is another add-on in the marketplace - which is free - that also offers a chat solution. It's called Meebo Bar, which is a 3rd party application that integrates social media, including Facebook live chat! Here's a link to the add-on:

http://www.concrete5.org/marketplace/addons/meebo-bar-add-on/...

Also, I happen to be working on a live jquery chat add-on for concrete that will be somewhat similar to Facebook's chat interface. I hope to have it completed within a month or so.