I use Waze every day to negotiate a typically 90-120min (one way) work commute, but it depresses me greatly that humankind has degenerated to the point where Waze would need to alert people to kidnappings and hit-and-runs because they're prevalent enough to need alerting.
I really love Waze, here in Madrid (Spain) is a compulsory app if dont want to be fined by velocity police radar.