Type in "shotspotter fail" into google search (or click the link, I've done it for you)
Personally, I don't see the value of this product at all....
As Mr. Rhodes points out, it is an after-the-fact tool.... the only first responders who could make it to the location in time to nab the shooter would probably be close enough to hear the shot themselves. Unless the shooter sticks around (as Mr. Karas sardonically points out) what is the value of the tool?
Beyond this innate flaw, what about false alerts? (read the stories)
Unlike on TV, all gun reports do not sound the same. Add in all the other similar-sounding reports (car backfire, firecrackers, indiana jones cracking his whip, guy clapping two bricks together, etc) and you've got cops running all over the place responding to shotspotter alerts.
Maybe if you combine Shotspotter with AISight, you could predict who is about to shoot a gun... :)