ahhhh, the chat room.
I spent a little time reading up on the sites beginings and found that the chat 'feature' never did work well, from day 1.
folks never really got into it. but a year or so ago, I found a service called "userplane" thats a live feed you can plug your guitar (and even a web-cam) into. last I knew, these things were popping up everywhere. but I didn't like the userplane homepage... adds, traps, all kinds of nasties...
Jim hosted one....
but you kinda had to schedule to meet your buddies there. theres another one at WorldSentiment that might be more active (that one might have turned kareoke).
Jim Heidinger also hosts a couple cool jam sites, and a yahoo group.
but make sure you learn how to search the archives here at Wholenote, there are riches there. Look in the announcements forum for anything AAT (Add-a-track).