Tagging is the act of applying key words or phrases to any given object. If you want to understand the Web2.0 movement - you've got to get your head around tagging. It's foundational. I write a lot about tagging throughout the book. Here are some links to fill in your knowledge:
Beth Kanter on the Pros and Cons of tagging.
More Beth Kanter - her tagging workshop.
(this is a stellar resource!)
Dave Weinberger on why tagging matters.
Ruby Sinreich on why nonprofits should use tagging.
A related article from TechSoup about tagging tips.
If you read all of the above articles, you will be strongly grounded in the art and significance of tagging!
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