Speaking at the National Press Club in Washington on Monday, Herman Cain continued to defend himself against claims that he sexually harassed two employees while leading a trade association in the 1990s, telling the audience that he's the victim of a "witch hunt." As he had earlier in the day on Fox News Channel, Cain admitted that he had been accused of harassment while he was the president and chief executive of the National Restaurant Assn. Cain insisted to the lunchtime crowd that the claims were false and said he did not know whether they were settled or how much it cost to settle them/Robin Abcarian, Los Angeles Times. More here. (AP photo)

Question: Is this bit of dirt which had to have come from an opponent proof that Cain is a force to be reckoned with? Or is the claims, despite the source, a cause of concern for you?