What I find particularly interesting about the mobile-for-development field is how a disproportionate amount of innovation occurs in the very places where resources and funding are often in shortest supply. Just as mobile payments started off as an indigenous phenomenon long before Vodafone, the British government and Safaricom brought the world M-Pesa, numerous mobile health initiatives start off as innovative, small-scale projects before the bigger players spot their opportunity and attempt to take them to scale. One can only imagine the number that fail and fall by the wayside before they get this far -- Darwin's "survival of the fittest" can be equally applied to the mobile applications world as our own.