I just came across this little iPhone app that displays Growl notifications on your phone that originate from your computer’s Growl-compliant app. It’s called Prowl, and it’s exactly what I had in mind when I wrote my little piece on iPhone Push notification two weeks ago.

Had Apple chosen to allow 3rd party background apps in favor of its notification service, this kind of thing would’ve been a near impossibility—not for the technical piece that lives on the iPhone, but the huge amount of potential bandwidth and complex infrastructure from the building a service from scratch. Furthermore, it would be Apple with the device that has a battery capacity problem. That’s not really the point though.