Showing the number of users online

I'm a bit new to Fakku! so if this exists pardon me. At any rate what I want to ask is: Could there be a panel or something that shows the number of users online?, for what you ask, is simple for example you are creating a poll, of course you would want to create it when a lot of people are connected, is a simple reason or not?. If something like that could be added will be very nice, and again if it exists I'm really sorry for bothering you people.