I read the Forbes article about Waze, and it immediately resonated with me. Waze is a startup trying to use crowd-sourcing for route planning. Users with their app provide real-time traffic information, which can be used to inform the rest of the community. This is a concept with obvious network effects and Waze are trying to get critical mass by offering giveaways to get user adoption. It's a great concept. My senior year thesis was actually about using vehicles as probes to provide real-time traffic information, so you can see why the concept resonates. Of course back then, it required clunky GPS devices plugged into a car's lighter and jury-rigging that into a transmission device to send the information, ie a completely impractical concept. Not so anymore. I hope Waze get to critical mass.