Why my book about Marissa Mayer uses so much anonymous sourcing

Flickr When I finished the final draft of my new book, “Marissa Mayer and the Fight to Save Yahoo!” my editor and I came up with a list of authors that we hoped my be willing to write a blurb for the back cover. At the top of my list was Ken Auletta, the staff writer for The New Yorker, who has written several books about the industry, including “Googled: The End of the World As We Know It.” Auletta read my book. He even said he liked it. But he wasn’t willing to blurb it — not until