If users can start chat rooms, I think it would be a good idea to set up filters like some other people were saying or create passwords or have the servers generate codes for the leaders to send to people they want to invite.
I think that this has been discussed a few pages back and it'll be somewhat like that.
i think it should be like a face book chat but with everyone who wants to join that chat room
By Facebook chat, do you mean for it to be exactly like Facebook chat, or have the little chat box like Facebook follow you around? Well, I consider Facebook chat to be rather small and I don't think that many people could fit into the chat due to it being so small. If you mean that the chat follows you around. I don't see a problem with it, but I'd rather have a page where it displays all the chat rooms. So that it's larger and resembles xat instead of being like tinychat. I'd like for the chat room to be large.