score:6
They won't take your neighbors word for it. Instead, they'll have a parking inspector come out to that particular street (they use tiny Go-4 cars) and take a photo of your car. Then after 72+ hours the parking inspector will come back and take another photo - if your car is still in the exact same spot, you'll get a ticket or get towed away. This is also how they enforce 2/30/120 minute parking limits around the city.