My favorite line from the bizrate "customer reviews"
"the scooter is all i though it would be. the scooter is not as good as i though it would be......"
Seems they are being re-rated:
Q: Why is this store being re-rated?
A: Stores can be re-rated for a variety of reasons, including:
Detection of a significant amount of unusual survey activity that makes us believe that the prior ratings were unreliable.
Significant changes to a store's site or operations.