You can embed who is online right into your site. On the right, you'll find a live, working example of the online list for our site. If there is nothing to the right then no one is online. You can even chose a max number of results so that you don't disrupt your layout.
ArrowChat includes the option to embed chat rooms right into your site! You can use just about any width/height combination that you want, because the embed is completely responsive.
Now with version 2.0, you can embed password-protected rooms as well. The user will be prompted for the password.