There is a nice live chat running for general astronomy. There are about 10 active people in there, with 29 people total. Very friendly and enjoyable. Everybody is welcome to join in on the chat.
For anybody who knows what IRC is and how to use it...the server is irc.freenode.net ##astronomy
For people who don't know what IRC is and are new to it...
Download
http://www.mirc.com/
When starting type in nickname and the other information (doesn't matter if real name and email are legit)
Then click okay and in the text box all the way at the bottom of the window, type /server irc.freenode.net -j ##astronomy