Linked Smartphone Seismometers

I like the idea of using multiple sensors to drive some sort of decision making system.  Smartphones are an example of a commonly available, widely deployed sensor.  Could they be connected to form a network for analyzing seismometer data to predict earthquakes?  Some comments on the idea.   I was involved in a project that gathered pharma sales data to attempt to detect some kinds of bio terror attacks.  This work, after the input and effort of many talented people, ended up here. How might this kind of event data analysis have similarities?