Part of the overhaul that the NExpress Shared Catalog OPAC received (courtesy of Liz) included the addition of buttons to Like and comment on a book in Facebook or Tweet the URL of the item. Both just passed my tests and here are the results…
From the Details page of an item (where the holdings table is found) in the Online Catalog…
If you are friends with me on Facebook, this is what you will see if I “Like” a title:
If you are not friends with me, you see this:
You can also post directly to Facebook from within the Catalog and “Like” the item:
Finally, you can Tweet:
Kudos to Koha, as well, for giving us such an awesome OPAC.