In this final of three installments, novelist Nancy Martin takes time from the release of her latest mystery, Little Black Book of Murder , to talk with Kathryn Craft about her recent Facebook promotions. Now that we've heard about how fun and popular they were, it's time to scratch the bottom line ... Kathryn: Now the tough question—do you think your efforts have translated into sales? What lessons have you learned from these efforts that you can pass along to our readers? Nancy: Let me say first that I am usually embarrassed by plugging myself, and cringe when I see writers openly campaign for awards and reader attention. In a recent New York Times column, essayist Philip Lopate said there is nothing more becoming in an author than modesty, and I am firmly in that camp. Sure, self-promotion might work, but I am too Presbyterian to do it! I think too much unseamly shilling demeans the writing. And readers aren't stupid. They recognize ego and flop sweat when th...