online count tracker

i wonder if we cant use online count tracker, im specifics referring about amung.us widget, does anyone use this widget & manage to make it work? bcz it not working for me,

i just use this code, but it not show correct count of ppl online.

Code:

<p class="no-border"><a href="http://whos.amung.us/show/0a2xkjsm"><img src="http://whos.amung.us/swidget/0a2xkjsm.gif" alt="tracker" width="80" height="15" border="0" /></a></p>

thanks,