http://earthquake.usgs.gov/earthquakes/states/seismicity/
This shows the cluster where there have historically been quakes. I see that the midwest cluster has all about the same intensity, and are located where plates meet.
Fracking will be next.
Anything that reduces our dependence on foreign oil is bad and must be suppressed. Sort of like the Saudis have some say in where we drill.
That's the point.