I think when you close the browser you will not show on Susan's as the site depends on a keep alive exchange which is a part of the internet protocol. If you leave everything up, you drift off the bottom for about 30 minutes and then I think the connection is broken. While my computer is up 24 hours a day, I cycle it from time to time and I can get back it without the need to log in so the site remembers a cookie and the fact you are still connected. If Susan cycles the server for some reason, you will need to log back in.