To calculate the overall star rating and percentage breakdown by star, we don’t use a simple average. Instead, our system considers things like how recent a review is and if the reviewer bought the item on Amazon. It also analyzes reviews to verify trustworthiness.
A lot of it is common sense, but it's nice to see 99% of the info you need all in one place, as opposed to word-of-mouth. I'd prefer a more scientific approach to information delivery (show stats + data and their sources, etc.)
Great sets of books for new parents to be. Lots of information but you can selectively read only the applicable chapters/sections. Good general knowledge when you don't have time or don't want to search for every little thing online through forums or websites.
These books I did read, The what to expect while expecting I got through ok, once baby got here I always seemed to be behind (you read it in months as baby grows). I tried to keep up and the info was good, I was just so busy being a first time mom :)