Two takes on the prospects of a Sarah Palin presidential nomination in 2012, offered Sunday by participants on ABC's "This Week" roundtable:– "She's a joke. I just can't take her seriously. We've got serious problems in the country. . . . The idea that this potential talk show host is considered seriously for the Republican nomination. Believe me — it'll never happen," said New York Times conservative columnist David Brooks.– "You cannot underestimate the degree to which women will be drawn to her story, and that's who she's speaking to. These are people who are ignored, who nobody counts into their thinking," said Gwen Ifill, moderator of PBS' "Washington Week."Meanwhile, only 28 percent of Americans surveyed think that Palin is qualified to be president, according to a new CNN/Opinion Research Corp. poll. And Newsweek is taking heat over its cover photo of Palin posing in running gear.