Who is really signed up here?
Inside a chatroom, you are able to see all registered usernames who have joined the chatroom and decided not to leave room from the left sidebar. A circle beside each username indicates if the user is active or offline—green means online, hollow means inactive. But even if you see a couple of online users on the sidebar, not all are actively chatting. Some seem to be just looking around, while some leave the group right after a few minutes of joining. The ability to easily join and leave a chatroom proves to beneficial especially if you decide that you don’t like what’s going on inside the chatroom.