Lots of mattresses are rated +4.5 with 550 reviews but when you go read the reviews, there's a ton of 1/5 reviews saying "the memory foam lost its memory after

Lots of mattresses are rated +4.5 with 550 reviews but when you go read the reviews, there's a ton of 1/5 reviews saying "the memory foam lost its memory after a couple of months." For example: http://www.overstock.com/Home-Garden/Comfort-Dreams-Select-A-Firmness-11-inch-King-size-Memory-Foam-Mattress/3158655/customer-reviews.html http://www.overstock.com/Home-Garden/Comfort-Dreams-Select-A... Something really shady is going on with their rating averaging.