I'm sure one of the most frustrating things for terrorists and other enemies of the state is reconnaissance. Driving around in your unmarked van, trying to take pictures of bridges and buildings, pulled over by the authorities for questioning... Now they can plan attacks from the privacy of their own lairs:

The most powerful technology A9.com invented for Yellow Pages is “Block View,” which brings the Yellow Pages to life by showing a street view of millions of businesses and their surroundings. Using trucks equipped with digital cameras, global positioning system (GPS) receivers, and proprietary software and hardware, A9.com drove tens of thousands of miles capturing images and matching them with businesses and the way they look from the street.

[ A9.com > Company > Yellow Pages on A9.com ]

Odd, DC isn't one of the cities they chose... Also odd Jeff Bezos remains a free man...