They are reviewing placing broadband on power-lines - however, there are problems with radio interference - Motorola may have solved the problem.

However, until that day comes may I suggest modem on shortwave radio... it is excellent for remote parts of the world and those that want to stay online. A friend used it on the "junk steamer trip around the world."

PACKET RADIO is one option: Wikipedia def http://en.wikipedia.org/wiki/Packet_radio

WIN LINK was a useful tool during hurrican Katrina in NO - http://winlink.org/

Sincerely,
Gargoyle