High Risk/Vulnerable Individuals

We have published a very successful mobile application of economic indicators. Now help us take this app to the next level. What other indicators or mashups are possible to deliver timely information or services? How can we build upon this app to be a foundation for deriving valuable insights through big data and analytics?
Hey All,
just wanted show off my usage of the Census API.. I am using the census data to show off surrounding block census data around each address on real estate listings. Pretty cool. Thanks for Census Developer API for doing such a great job to make this possible. Check it out:
This is just something I wanted to be able to visualize for my own entertainment/enlightenment... but I think it turned out pretty well. Still working on showing the time series of contributions in a given ZIP.
ACS data produces estimates on traffic, car ownership and mass transit use. Create an App that can be used my city officials to determine how many vehicles would be needed to evacuate those with out cars.