1. The document discusses folksonomies, which are user-generated tags used to categorize and find information on the internet. In contrast to formal taxonomies, folksonomies have no controlled vocabulary and emerge through public usage. 2. Common websites that use folksonomies for tagging and organizing content are mentioned, including Delicious, Flickr, and YouTube. The benefits of folksonomies for personalized tagging and navigating information are outlined. 3. The differences between folksonomies and formal taxonomies are explored, as well as debates around issues like consistency, scope, and the lack of structure in folksonomies compared to taxonomies.

1. Folksonomies
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3. – Del.icio.us (www.del.icio.us)
– CiteULike (www.citeulike.org)
– Connotea (www.connotea.org)
– Flickr (www.flickr.org)
– Furl (www.furl.net)
– LibraryThing (www.librarything.com)
– Scutte (www.shadows.com)
– Shadows (www.shadows.com)
– TagCloud (www.tagcloud.com)
– Tagzania (www.tagzania.com)
– Unalog (www.unalog.com)
– Yahoo's MyWeb (http:myweb.yahoo.com)
– YouTube (www.youtube.com)
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