In our work, we augmented the capabilities of Google Flu Trends by evaluating algorithms that can translate the raw search query volume produced by this service into actionable alerts and developed Flubreaks, a live system that uses Flu Trends data: http://dritte.org/flubreaks/
How about queries regarding drug store locations or treatments? That might translate to geography. Or maybe that's already what they do?
This system has full potential to help the masses.