Magazine shakeup! Longtime Vanity Fair contributing editor David Margolick is leaving the Condé Nast magazine to join Portfolio (as Howell Raines did earlier this week), the Observer is reporting. Margolick most recently penned a well-received profile of Eliot Spitzer for the magazine. Vanity Fair editor Graydon Carter is known for his rotating list of favorites-could Margolick have been on the outs? We would wish him better luck with his new capitán, Portfolio editor Joanne Lipman, but we're not sure he's headed for friendlier pastures. One thing's for sure, Portfolio must be putting serious coin on the table to convince players like Margolick to come on board. If you know, let us know.