Still, no one has answered what the deal is with this bizarre ad that GOP candidate Herman Cain's campaign released showing his chief of staff Mark Block taking a drag from a cigarette. But Cain discouraged smoking when he appeared on CBS' Face the Nation Sunday morning. "Young people of America, all people: Do not smoke. It is hazardous and it's dangerous to your health," Cain said. "It's not a cool thing to do." But he also defended the ad. "One of the themes within this campaign is, let Herman be Herman," Cain said. "Mark Block is a smoker. We say, let Mark be Mark." The video has gone viral, generating well more than a million views on YouTube, so maybe it was all a publicity ploy?