Ting is an initiative which is creating a shared systems and data infrastructure for Danish public libraries - and potentially others. At its heart is a 'data well', an enriched aggregate of data (see a list of data sources here). Another important component is Ding, a Drupal-based content management system for presenting library resources.
Some features of the websites are described on the Ting blog. I liked the emphasis on the integration between website and database. Facets are on top of the results display rather than on the side. There is some work-based clustering. There is a nice suggestion feature on the search box.
Here is a high-level architectural view:
Ting is an interesting initiative. I do not have a lot of context to assess it. I do not know how well its aggregation of data will compare with others and I only spent a little while looking at the library websites. It provides an example of the shared approach I recently suggested would become more important. I was introduced to it last week in a nice presentation by Mats Hernvall at a meeting in Lund. He discussed the importance of scale and collaboration in developing library services and noted that DBC were interested in further partnerships.
Note: updated from beta to production URLs for the library websites.