Okay, I’m excited about folksonomies. My introduction to tags was at Flickr, where I’ve been amused at how they help connect people, photos, and concepts. Then Jenny Levine at The Shifted Librarian started talking about them, with David Rothman at TeleRead echoing and expanding many of her points.
That was about when I found Many to Many, where I read about Technorati’s tag project (plus documentation).
Wanna see it in action? Take a look at “dogs” in Flickr, del.icio.us, and Technorati.
Sort of related: Touchgraph.