Well, I don't need an SMS to notify me when a bulb goes out in my home. I think I am quite able to see that with my own eyes. But it might be useful for industrial buildings maintenance. Or within small households where the owner is actually blind.
Nil nove sub sole (Nothing new under the sun). I already bought this device 5 years ago at Conrad in Germany for 25 € (www.conrad.de). But still cool...