Would anyone be interested in this? I whipped one up last night and it works like a charm. I did use the official one though, so you will have to add your own executable in the "gnotify" directory. If there is any interest, I will have to find some way to host it, unless of course Rob wanted to host it.
Take a look at this for the dev team. Just give me your email address and I'll send you the complete one. However when we host it, we will have to leave out the executable as per Google's license agreement.