On a related note to this:
Apparently some author blogged this weekend about the Amazon reviews system, basically saying that anything other than a 4 rating is a NOT RECOMMENDED review and that either you should post a 4-star or no review at all. This made me really glad that I stay the hell away from doing reviews on Amazon. Mostly because I get my review jones out over here under my own control and I can say a lot or a little as I feel like, but also because uh, some things need to be clarified. And I had no idea that giving someone a 3 there might as well be a one star, this is total crap review and I personally am totally sinking your book. Geez, really?
And again, three or 3.5 stars here does NOT mean "NOT RECOMMENDED." It is recommended, but with some reservations, or "this wasn't quite for me but it wasn't bad" qualifications. It's not a 100% yay, but it's usually about a 70-80% yay. "NOT RECOMMENDED" here is 2 or 1.
So there you go.