When in pennysplace comm's Chat Room it is still possible to use the rest of the comm's at the same time. All you need to do is right click on "more choices"( top right corner ) Open new window..and click on what you choose (i.e music midifiles or messages etc ) then you can chat whilst using/looking round the rest of the comms at the same time.
Another way is to click your mouse outside the chatroom and press ctrl & n.Another window opens up.
You can use this method to also go in another room at the same time!(Just paste the other room link or type it in the link space bar once you have opened the new window)