Allows you to organise books, videos, music, and games found on external websites into shelves and create user reviews for them.
This is simply because I do most of my development on github.
The premade templates (
/templates/) that are included were made for the default TwentyEleven theme that comes with WordPress. If your theme has more or less markup, the templates may look strange in your theme.
My suggestion to those who are having trouble is to open up the template (such as
archive-ml_product.php) side-by-side with one of your standard theme templates, and make sure that the markup matches.
The main difference is that a review only occurs one per product per user. A single user cannot write multiple reviews for the same product. However, a user can have multiple usage on multiple shelves (or the same shelf), but each of these will link to only one review. Additionally, usage do not have pages in the frontend. They are listed on review and shelf pages.