http://mytinystats.com/reports/statusreport.php
MyTinyStats tracks website visitors in real-time. The link above takes you to my status report which shows me the overall health of the system, including the total number of domains being tracked, the current hit rate per hour, etc. There are two real-time updating charts (the speedometer for Hits/h, and the beaker for the "queue", which shows the hits as they come in).
I am absolutely in love with the fusion product, was worth every penny.