From the page: “L2 is a greasemonkey script that adds Amazon content to most library catalogs.
Currently, it:
* Grabs book jacket and review information from Amazon
* Grabs price information from Amazon, Abebooks, Powell%u2019s and others
* Deep-links the item to worldcat.org
* Uses OCLC%u2019s xISBN to find alternate content for items that Amazon doesn%u2019t sell (such as eBooks).”