I have added a number badge onto the Chat icon at the top of the site that will indicate the number of people currently in chat. This should help you know when people are available for chatting. I have also removed the duplicate "Chat" link that was in the dropdown navigation. It seemed a little pointless to have the link in 2 places, and now the one at the top will give you a visual indication of how many people are in chat, so it seems like the obvious one to use.