LibraryThing has now gone the next step and allowed integration between its now-massive database of information and your library’s OPAC (that’s Online Public Access Catalog for those who haven’t been through Library School–what people nowadays simply call the online catalog or just “catalog”). Imagine your library patrons being able to add tags and recommendations to the entries for your books, and without you needing to struggle to program it all. LibraryThing’s done the work for you, so you just need to add a few lines of HTML code and that’s it!

http://www.librarything.com/forlibraries/ gives you all the information you need, including a handy “Take the Tour” link.