The thing about posting Amazon reviews here is transparency. When a dear reader posts a review of my book everyone here knows it's a dear reader - there's no pretense about it, and seeing those names on every book of mine tells everyone that while these folks may indeed like the book they are, in fact, dear readers who know me. For example, the review I posted the other day from someone named Webstercat is someone I don't know at all, so that was nice. But when your friends are reviewing your book and your trumpeting that here, at least say "my friend loved the book" - no harm in that and it's transparent. And, of course, any review is a good thing.