Coulter basically said that if Romney wins the nomination, Republicans will lose. Same difference from where I sit.
Negative ads that have truth in them are more persuasive than ads with generalities and fiction in them. Take for instance that ad which never aired that Romney was giving free publicity for...despite the fact that the facts were twisted, the ad nonetheless contains the fact that millions of other fired/laid-off/outsourced unemployed people are in that same boat and know the truth of facing death because of nothing more than losing their health care coverage that they worked for via their employers.
That's a fact, and a persuasive fact at that.