Not to take your thunder nostatic, but this is another one that's been around for a while.
http://www.flytecomm.com/
I use this one to track flights when someone's flying into Chicago. I can tell exactly where they are (even a visual of where exactly in the air the plane is...e.g., over Des Moines, etc.) and can decide when to leave for the airport.
Not sure if yours works the same way, but the next time one visits, I'll check yours out.
