Three months ago, Columbia Journalism School grad Alexandra Polier was the target of Internet rumors and media speculation about a supposed extramarital affair (denied by all concerned) with Democratic presidential candidate John Kerry. Back then, the 27-year-old Polier's photograph was published in papers from New York to London, and she pleaded publicly "that the press respect our privacy and leave all of us alone." But now she's had enough of privacy. Word from Nairobi, Kenya - where Polier has been living with the family of her Israeli fiancé, Yaron Schwartzman - is that she's toiling on an epic essay about...