Chat rooms are available in groups you belong to. When you click into your group you will see a link in the middle of the page saying whether or not there is a room open. You can also click on the chat link in the left hand menu to see if one is currently open in that group. Chats have to be started by admin so unless there is a posted schedule there probably won't be a chat.
To find ongoing public group chats you can hover your mouse over the group tab and then click active chats. You will have to join the group before you can join in the chat but you can see which chats have members.
Newcomers Club seems to have a chat going most of the time and there are several 24/7 chat groups that have chats ging all the time. You can do a group search for "chat" and see what comes up.
at 3:41 PM on Jun. 1, 2009