“Since the downfall of Kaavya Viswanathan, the Harvard sophomore whose novel was yanked from stores and whose two-book contract was canceled by her publisher last week, attention has focused on Alloy Entertainment, the little-known book packager that shared the copyright with her. What has received scant notice is that the parent company, Alloy Media + Marketing, is not really in the publishing business. It is an advertising and marketing firm that specializes in selling stuff — and helping others sell stuff — to teenagers and preteens.”