I have often found the option to sort the reviews to be ineffective as all reviews with just one review showing 5 stars show up on the top. One person's 5 stars might turn out to be zero stars for 100 others. Products with more reviews should be given priority or at least the user should be able to choose reviews with a minimum number of reviews.

Chowhound
Comic Vine
GameFAQs
GameSpot
Giant Bomb
TechRepublic