If you like the idea of this then you will also like this one. It goes a bit further, still on my todo list for interesting fun projects.
http://smarterware.org/6172/hilary-mason-how-to-replace-your...
Hillary Mason
Substitute yourself by some small scripts Document classification
Just stumbled upon a YouTube clip of one of the best Ignite presentations I've seen, by Hilary Mason, a computer scientist at Bit.ly. Mason wrote a series of scripts that auto-respond to email with particular content, and auto-nag folks she's emailed but hasn't gotten a response from yet. Hit the play button to hear more. She says once the code's fit for sharing she'll put it up on GitHub. Cannot wait.