Many of the Communication UI components also support Lurker mode. This mode is simply a connection where the username is null (not defined). The user will be able to "watch" the activity on supported components, such as Chat, but will not have the ability to interact, such as post a message. To place a user into Lurker mode using ActionScript, use the setUserName() method to set the username to null. If you are using the SimpleConnect component, then prompt your user to remove their name and press Login.