said by geokilla:
Only people that know such a tool would be tech savvy people... And if the Internet is down, how do they expect us to get onto the Internet....
True but don't forget more and more people have smartphone and data plans. The day and age where our home is the sole connection to the internet world is shrinking.
That being said, an automated voice message would be great for those who have outages like the hydro example earlier. For slow-downs, it's a bit more complicated.