Group items tagged

from Thinkmap Visual Thesaurus: paste text in and it analyzes text, creates tag cloud, shows main subjects falls under, etc. Perhaps there is a way to use this to discuss concept of controlled vocabulary?

I use Visual Thesaurus for my library instruction all the time, but I never noticed the VocabGrabber. I will have to try it out and see if I can incorporate into my instruction as well :)