4. A Quick Poll
• Have you used any of them?
• Email: Gmail
• Photo: Flickr
• Blog: Blogspot
• Video:Youtube
• Bookmark: del.icio.us
• Mac: SpotLight
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5. What is TAG?
• label
• metadata - info about info
• non-hierarchical keyword
• a better way to organize information
• a great way to discover interesting things
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