Journalist saved by Twitter wants to start a Twitter-driven emergency network
thestandard.com
thestandard.com
Caller: "Yes, Twitter is down, and I don't know what to do."
I guess they must have an amazing marketing department, because they are down as much as they are up, and I bet just about nobody can name a competitor.
A Twitter-like UI that would simply send email to all your emergency contacts might be a lot more reliable and much easier to scale.