Does make you wonder what value the ratings have. Given that most of the ratings are 4-5 you would think most products are wonderful on amazon. Also makes you wonder how many are real users and how many are paid.
I've noticed on a few applications/sites I've made...
Star ratings tend to bias high, but ratings attached to reviews tend to bias low. If you're happy with the product, you just give it a 5... if you're unhappy, you give it a 1 and a review... but that takes more effort... so the happy outweighs the unhappy it seems... just my own theory, but its played out in a few places...
