Rush Limbaugh has SOME credibility, albeit mostly skewed. Ann Coulter has never made a complete statement without something being blatently wrong. That's actually her shtick. She enjoys making inflamitory statements. As such: credibility = zero
it is possible to have a little credibility, but as for mr. coulter, he/she has none. when you call 9/11 widows harpies who's husbands were about to divorce them and who need to go pose for penthouse simply because they were asking for an investigation into the attacks which killed their loved ones, than not only are you a piece of crap, but a piece of crap with zero credibility. mr. coulter has about as much credibility as rush limbaugh, who is a drug addict who is on the record saying that all drug addicts should be put in prison and a 3 times divorcee who rallies on about the "sancitity of marriage".