The only Amazon-to-Goodreads Firefox extension that actually works for ebooks.

A Must for GoodReads Users. This adds a Goodreads rating line below Amazon's reviews. When you click on it, it will take you to the Goodreads page for the book you are looking at. I LOVE THIS!

Unobtrusive, and oh so helpful. So many people and sites link to Amazon for books; this extension makes it an easy one-click to jump to Goodreads.