In February, an attack ad titled "Don’t Let the Games Begin" started popping up in online gambling forums. The ad opens on two shadows shaking hands in a dark city alley. We see a distraught mother at her laptop, a young child at a computer in a dim bedroom, police cars with sirens. A narrator with a scaly voice comes on. "An established al-Qaeda poker network could extract enough untraceable money from the United States in just a few days to fund several 9/11-sized attacks," he says. "Say no to internet gambling."The message is clear: internet gambling will fund terrorism...