You've loaded an old revision of the document! If you save it, you will create a new version with this data.
Ex Libris http://www.exlibrisgroup.com/category/PrimoOverview
Interactive publication about Primo, including testimonials from existing customers: http://www.exlibrispublications.com/primo/
List of Primo sites with URLs and the systems harvested: See also the 'Discovery - Who uses what systems' section.