Glad you liked him. He's becoming more popular than I am!

I'm planning to write a bit more about him and release the code for him, but I suspect it'll be after the Maker Faire before I get chance to do so - too busy getting my demo ready for that right now.

The basics are covered in my Getting Started with Arduino slides, although that uses the computer to search twitter rather than having the Arduino ethernet shield to let the Alertuino talk to the network direct.