This website uses the Node.js socket.js technology to make a forum of chat rooms. You can use this stellar tutorial by Brad Traversy to get started with socket.io instant messenger techniques: https://www.youtube.com/watch?v=tHbCkikFfDE
The current version of the website allows you to make a user name, and then create or join a chat room. In the end, I would like to have "chatrooms within chatrooms" (please no chatception jokes). What I mean, is that I would like users to create "Channels", in which visitors can make their rooms.
Find it on my blog here: http://burkedeveloper.org/
Feel free to rip the code.