If you are an Internet Relay Chat  user, you can enjoy a multi-user, Scala-related chat on the Scala IRC channel:
In order to access the chat, you will require an IRC client, or a web-based gateway. You can find more detailed information on the Freenode IRC network on this page .
A very large number of IRC clients exist, most of which are available for free; you can find a list here . Some examples of popular IRC clients are mIRC  (Windows) and XChat  (Unix/Windows). Firefox users can use ChatZilla , an IRC client for Mozilla based browsers. OS X users can use Colloquy .
It is also possible to connect to the #scala channel by using a web interface. One of the best ones is Mibbit , but unfortunately Freenode banned  Mibbit  in June 2009. Until that is resolved, the only alternative is using Freenode's own web client , which is unfortunately not as refined.