The last thing survivors need right now is the ability to check facebook and twitter. Sure it would be nice to e-mail relatives, but their first priority right now is getting a drink of water, among other things. Even if they all could log on right now (on battery power)they would immediately jamb any temporary network, and that's assuming these poverty stricken people even purchased the technology before the quake. Sure maybe some. The point is, it is not a critical need for the victims today.
That leaves the responders' critical need for communications. There are a number of ways. Repeaters on nearby mountains powered by generators to service hand held devices throughout the region; a basic military capability. Aerostats can function as well as anything Sanswire has to offer for hanging electronics off of. Nobody would be trying to shoot them down, after all.
While the need for communications is real, the need for Sanswire to provide them is not. Could be why you don't see other, more respected companies jumping up and down and making a lot of noise. The ones who can help are probably quietly helping and worrying about the pr later.