The problem again is that in an emergency situation (even without limited bandwidth and no Spetznas folks with their choppers) you have no control over the other 600 Million people who may want to access Farcebook to have a wee gossip about an impeding TEOTWAWKI event which they have just heard about.

The ability to post a message on a twitter page from an SMS is rather useful though if you are within cell service reach. A few postage stamps kept in the wallet along with some postcards isn't too much of a issue though. I should have thought about using them during Hurricane Irene when I was in Cuba though as the rest of the family back in the UK were racked with worry apparently due to the news media, after announcing that the Hurricane had shut down the 'happiest place on earth'.