Ask HN: If the Internet goes dark what do we do?

This S3 outage has got me thinking. What if there was a full out Internet war (or some other cause), and for some period of time the Internet was down for everyone[1]. What's the plan? Should we meet at the place near the thing where we went that time?

I mean what should we do to coordinate and keep informed? TVs might be down if they are bound to an Internet service. Radio? Do we try to stay off of limited services to leave bandwidth to emergency services? Has anyone given this serious thought (I haven't)?

[1]: Limited in scope to whatever seems plausible to you, don't get lost in the how, I'm asking about the reaction to an un-known event.