Bootstrapping a federated Twitwork with annotations?

Just had an idea that with the new annotations feature coming soon in Twitter, we might have the means to bootstrap an Emergency Broadcast System.
Imagine if every tweet included info about where to find that users' status messages if Twitter is down. It could simply be the URL of a feed. Unless Twitter went down it would just be stored by your client. But if Twitter should go offline, at least you know how to find out what's going on with at least some of your associates.
The point is that with annotations we have the ability to create new ad hoc flows of information, and can possibly use it to make Twitter more reliable.