From the amazon reviews it sounds like it's written in a similar vein to Stephen King's On Writing, ie, part memoir, part useful info. about marketting.
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Goodness me, checking out a number of his books and he does reply to reviewers. Never, ever, reply to Amazon reviewrs, it's like feeding bears with the door open.
I once worked with a guy who had a PhD in sarcasm (or often appeared to), and who was also an avid reader. I can't help wondering whether Mr Wadhelper is him in pseudonym. Especially given his riposte to the author's comment on his review.
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Whenever I come across online reviews of anything, in which the reviews alternate between extremely enthusiastic and completely negative, I find myself wondering which of the extremes have their own agenda and what that agenda is.
I'm always suspicious of early, 5 star, reviews that quote from the blurb. I suspect they are written by the publisher's marketting dept.
I see a lot of his novels were co-written with his wife, so maybe she's got the book group to contribute (oh, I am such a cynic )
I haven't read this book but I know Jeff. He was one of the visiting writers at the Odyssey Fantasy Writing Workshop I attended a few years back. Everyone agreed Jeff's day was by far the best. He is passionate about getting writers to free up their creativity, and he got us doing some innovative exercises to that end. His own work tends to the literary side of Fantasy and is quite unique. He struck me as very genuine, helpful and thoughtful kind of writer; also very funny and inspirational. As for his wife, Ann, she's the editor of Weird Tales, a pro magazine with a very good reputation. She was at Odyssey too and for what it's worth seemed to me very much her own person.