Ratings and discussions of ratings will always be controversial.  Some people will rate an item poor based on site issues and not actual product issues.  Some will rate poorly based on what they want the product to include despite the product listing that it doesn't.  Some have favorite merchants whom they feel can do no wrong.   It's all subjective. 

Fugazi1968, sounds like an offsite system similar to Yelp is what you're after. 

...... Kendra