Seb,

I think it would be really interesting to compare results of tagging museum collections in different environments, steve, Powerhouse, Smithsonian Photography, wherever we can gather comparable data. One of the reasons for steve, and our IMLS-funded research project, is to learn more about user tagging behaviour, and where and how it contributes to the accessibilty of museum collections. 

There are more questions than answers right now, and I'm looking forward to talking more about what we're all learning.

jennifer