Somewhat related, is it worth trying to build something that pushes to growl remotely? Seems like world of port blocking issues but maybe their is something out there that makes it simple.
I dont see why not. There are ways to push growl to your iOS devices, I cant see why we cant push them to our desktops.
Boxcar (disclosure: I helped build it) will allow you to send remote pushes to your desktop and mobile devices. On the desktop, we partner with Growl to display messages as a pop-up.