Townychat is new to us but not new to the server as it comes with Towny.
It's a pretty straight forward chatting utility that allows for channels ranging from [Local], [Global] and [Admin].
[Local] is activated y typing /l before you sentence or can be toggled by typing just /l. The same goes with [Global] as well, /g. Others are Town Chat, to communicate with your fellow city goers, it /tc and Nation Chat, same idea and town, is /nc
You will know when you have toggled on a chat channel successful because you will see a message similar to this...
Chat mode set: global
...
That's pretty much it... Yay...