There's more in the post I wrote on the museum developers blog at the time, Collections data published, but in summary:
We’ve released the files [218,822 object records, 40,596 media records and 173 event records] as a lightweight experiment – we’d like to understand whether, and if so, how, people would use our data. We’d also like to explore the benefits for the museum and for programmers using our data – your feedback will inform decisions about future investment in more structured data as well as helping shape our understanding of the requirements of those users. The files are in CSV format – because it’s a really simple format, viewable in a text editor, we hope that it will be usable by most people.And since someone asked for some background on how I dealt with the organisational issues, the short answer is - I was pragmatic, figured any reasonable data was better than none, and kept it simple. Or, as I wrote at the time in Update on collections data and geocoded NRM data:
A few people have commented on the licence (Creative Commons Attribution-NonCommercial-ShareAlike, CC BY-NC-SA) and on the format (CSV). As tomorrow is my last day, I can’t really speak for the museum but the intention is to learn from how people use the data – the things they make, the barriers they face, etc – and iterate (as resources allow) until we get to an optimal solution (or solutions). So please get in touch if you’ve got requests or think you can help clear up some of the issues these kinds of projects face, because there’s a good chance you’ll help make a difference.In some ways, 2011 has been the year I really understood how much of a barrier a 'non-commercial' license is to re-use ('Wired releases images via Creative Commons, but reopens a debate on what “noncommercial” means' is quite a useful article for understanding the confusion though the LOD-LAM Summit was really where it came together for me). Even I've struggled with questions like 'does a non-commercial license mean I can or can't upload the data to Google Fusion Tables to clean it?', let alone 'can a widget made with non-commercial data be displayed on an ad-supported blog site?'.
The licence is a pragmatic solution – it’s clarification of existing terms rather than a change to our terms, because this avoided a need for legal advice, policy review, etc, that would have added several months to the process.
And yes, I know CSV is quick and dirty, but it’s effective. The museum sector is still working out how to match the resources available with the needs of mash-up type developers who work best with JSON and those who are aiming for linked open data; my hope is that your feedback on this will help museums figure out how to support people using open data in various forms. A simple solution like this also means it’s easy for the museum to re-run the export to update the data as time goes on, and that anyone, geek or not, can open the files without being startled by angle brackets and acronyms. Also, did I mention it was quick?
Most people who want to play with heritage data want to do the right thing, so an ambiguous 'non-commercial' license effectively prevents them using it (people who want to do bad things with it would probably just scrape the data anyway). I get the sense that museums (and other GLAM orgs) are strongly loss averse, so a full 'commercial use ok' statement might be a bit much, but maybe we can do more to define exactly what's reasonable 'commercial' use and what's not? The Wired article provides some useful starting questions, as does Europeana's discussion of their Data Exchange Agreement. Maybe 2012 will be the year we start to provide answers...
Update, January 2013: I've been writing a piece on open cultural data in museums so have been coming across more material on confusion about 'non-commercial'. The Danger of Using Creative Commons Flickr Photos in Presentations discusses one case where the owner of a photograph was confused about whether it was being used commercially or not. While that may turn out to be a case of mistaken identity, one commenter, Michael, says:
'Commercial and non-commercial are very difficult to determine. As such, I make a point of never using photos that have a non-commercial license. Too much hassle. (I also now do not use photos with a share-alike provision. Same reason, too much hassle.)'
A post on the Creative Commons blog, Library catalog metadata: Open licensing or public domain? discusses the case for and against requesting vs requiring attribution.