Can you provide more info? You don't 'sign up' for chat, but sign in. As a # of people have posted in this thread, there are certain days/times that people are likely to be on chat. Are you on chat during those times? If not, then maybe that's a reason. Also, weekends are less busy, although if they are it's later when people are getting in from going out for the evening. Weekdays are what people posted. No, there are no other flyertalk chat rooms other than on flyertalk. Cheers.