That ongoing “feud” between American Idol judges Mariah Carey and Nicki Minaj? Despite assertions by producers and Fox execs that friction between the two is “genuine” and that even Keith Urban and Randy Jackson have their moments, some observers are convinced the fracas is fake. Whatever the case, the judges and host Ryan Seacrest participated in a Q&A today that didn’t really address the so-called feud, but judges did take questions from online viewers around the country. They also talked about their reasons for joining the show and their individual approaches to judging contestants in what Urban politely described as part of a big “dysfunctional” but happy family.