Side Chatter chatroom addon от LSD Software

To activate Side Chatter, click on the Side Chatter icon on the browser menu bar. A chatroom, filled with lively discussion about the topic you're reading, is always just one click away. That is the idea of Side Chatter.

Side Chatter tries to be non-intrusive. It doesn't inject itself into every web page you visit. So it won't negatively affect your browsing speed, or present a cause for privacy concerns.