[Mad Dawgg]

Try this one:

http://www.npr.org/2012/04/11/150440356/quakes-caused-by-waste-from-gas-wells-study-finds

[xzins]

Thanks, MD. It worked.

That said, there was nothing in the article that showed comparisons to normal seismic activity in the supposedly affected areas. Also, there was nothing explaining the difference between a tectonic plate shift and a simple shift of mass.

For it to be an earthquake, technically it must be a plate shift. A landslide is not a quake, and a sub-surface slide would also not be a quake, but it would register seismically, iirc.