Hi. I enabled chats, but I see that no one is using them. On almost all the wikis I am on, we all have chat, and it makes communication much easier then going back and forth on the message walls. I highly recommend you use it, because if you're on, and you want to talk to someone, you don't have to leave a message on their wall or something like that. You just enter chat.
You can enter chat here:
The Calvin and Hobbes Wiki
You can also enter chat up at the top, under On The Wiki.