Jag nöjer mig med att citera följande angående ett tidigare inlägg om LIBRIS som Linked data och att vara med i flera sammanhang.
Open Means Open
The ethos of Open Linked Data is to enable the widest possible use of data. The current non-commercial clause in the data provider agreements must be removed in order to allow Europeana to make its metadata resources available as Open Linked Data.
What does the clause restrict? Imagine a BBC documentary on Mozart. It could be shown on a website, alongside a widget that uses data from Europeana to introduce the BBC audience to cultural objects about Mozart. This would expose thousands of people to your collection who would not otherwise visit Europeana or your website. The BBC, however, has advertising on its website. The non-commercial clause would rule out this use.
If Europeana and its providers do not enable uses such as this, we will fall behind in a rapidly changing environment. Wikipedia and others will take our place as the only available authoritative source for contextual data. This carries the risk of undermining the position of cultural heritage institutions as relevant information providers. When we can supply Open Linked Data to other providers, we will all benefit by placing ourselves at the forefront of the technology revolution and establishing ourselves as the trusted and authoritative source on cultural heritage information.

It allows to search in a unified way various object collections using that metadata through a web portal or an API. .This practice is similar to what is being carried out in a number of aggregator or union catalog projects such as WorldCat 1 CultureGrid 2 ….Currently the practice is hindered by the wide variety of metadata formats used it is possible to require providers to submit metadata using one unified model but usually this results in losing useful information. Re-use of objects and their accompanying data is also hampered by the rigidity of the means to access them Portal and APIs …