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	August 21, 2004 InfoWorld: Collaborative knowledge gardening. Jon Udell. To CTOs, though, I’d say that both are collaborative systems for building a shared database of items, developing a metadata vocabulary about the items, performing metadata-driven queries, and monitoring change in areas of interest. In the case of Flickr, an item is a photo; in the case of del.icio.us, it’s a URL.	August 2004 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 1 2 3 4 Jul  Sep