The Diva has read several accounts of the recent spate of earthquakes occurring in OK. It seems that state officials have finally taken some action. See: Oklahoma oil, gas regulators order changes after earthquakes
She recently saw a TV account of the matter, including the resignation of the state geologist. Apparently there are many facets to the causes and science of these earthquakes, and it would be useful to hear from readers closer to the situation.
Here is another recent clipping about the matter, noting that there were 12 earthquakes in one week!