Sarah Palin has picked a Christian author and magazine journalist to collaborate with her on her forthcoming memoir for HarperCollins. The journalist, Lynn Vincent, has been at World—the nation's best-read Christian newsmagazine—for the last 10 years as a writer and editor. This isn't a surprising choice for Palin, but it's certainly one worth noting. It's more evidence that she's honing a distinctly Christian public image since coming off the campaign trail last year. This seems to be a change from the days when she was a state-level figure, almost entirely unknown outside of Alaska.