Controlled Vocabularies for Sale

This is how important controlled vocabularies are: [someone has built a business around selling them][1] to professionals. I came across the site from a link in a [LinkedIn discussion][2] for [Adobe Lightroom][3] users. (I’m not sure, but you may need to belong to that group to see that thread — or maybe just to post to it.) I don’t know what the file format for the Lightroom controlled vocabulary is, and I would hope it would be easily transfer to other DAM applications, e.g. Aperture, but it would be great if scholars and scientists could build such things for themselves. (And please note that this is a subscription service, which means they have built in the idea of a living controlled vocabulary.)