Well, actually my dad figured it out but... whatever.
Anyway, my dad was getting mad because Sanjaya was still on AI, so he went to vote4theworst to see what it was all about. He found out that the person who runs the site doesn't have anything against AI but he says that the producers of American Idol choose one person (Sanjaya from AI6, Kevin Covais from AI5) that they force the judges to put through to the top 24. They choose someone who doesn't have a very good voice but has "charm" or something. They do that so the show is more interesting... you know, like Sanjaya's hair. And vote4theworst is trying to teach AI a lesson so they vote for that person to see if they can help them win so that AI will learn that they can only put good people through because anybody can win the competition.
Who knows how much of that is true

.... but that's what it said on the site.