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I'm not sure about the details, either. "Please review my book" is a lot more nebulous than "please post a review to amazon using your account, and email me the link to this address." 10% is probably an upper bound on how many people review their purchases on Amazon.

I sort of agree...

But a contrary view is that the holidays are when most people are on vacation, and hence more likely to read a book and have time to write a review. Assuming they had time to read the book, it's not like the review requires a considerable time investment (comparatively).

Only one person in the comments mentioned getting the book in late November. The offer closed on Aug. 18, and I've gotten a book from him before that was mailed promptly. That one person may be an outliar.

I got mine in late September. Read the introduction and wasn't enthused [probably shouldn't have read the introduction]. It's on my todo list, but perhaps I failed to give him the compounding returns of the buzz he was going for.

September.