Great app so far. We've implemented it at djangobrand.com if you want to see how it looks on a product page with reviews already listed.
I gave this app 4 stars as it is a bit difficult to change the UI settings. For instance, I'm trying to figure out how to move the star rating to the top of the product page, immediately below the main product info. One other feature that's missing - it would also be great if customers could update product photos with their reviews.
DJANGO - djangobrand.com