MSU alumna Stephanie McAfee signed the recently published hard copy of her New York Times Ebooks Bestseller "Diary of a Mad Fat Girl" on Wednesday in the Barnes & Noble Bookstore for Tammi Metz, a finance and economics instructor. The self-published author penned her book through Barnes & Noble using the bookstore's Nook publishing format, and it has been for sale on Amazon.com. While it cost her nothing to publish, people all over the world have been exposed to the electronic book, which was in good company on the bestseller list along with such titles as "The Help" and "The Girl with the Dragon Tattoo."