On: Idea Week. Post ideas you don't plan on implementing.

[Hexayurt]

Domestic disaster response (i.e. Katrina II, Bay Quake) using the internet and commercial supply chains to provide sheltering:

http://disastr.org

Lots of room for mapping apps, GIS, route finding, and an enormous capability to handle traffic spikes.

Slashing the risk of financial transactions in the developing world through a free-market inclusive biometric digital ID standard:

http://guptaoptions.com/4.SIAB-ISA.php

Just too big for a start up - they really need BigCo involvement to get going.