Thats the type of thing i mean, but its not connected to this site, your not automaticaly joined when you join RCU. if theres a thread here and i want to talk to the person thats answering, they would also have to be a member of this rcchat.
This does open up another maybe easier way of having a chat feature on this site, and that your automaticaly regestered and signed into a site like rcchat and every user here can use it with a press of the button on the person they want to talk to.
My first thoughts was a system similar to the P2P programs like Napster used to be, where you could just 'IM' anyone, i think napster also had rooms.