ANDY KESSLER: In the Privacy Wars, It’s iSpy vs. gSpy. “Big Brother is watching us. But we are watching back. . . . I know the precise number of red-light cameras because a website (poi-factory.com) crowdsources their locations and updates them daily for download to GPS devices. And 30 million surveillance cameras are a pittance compared with the 327 million cellphones in use across America, almost all of them with video cameras built in.”