Wiki Love
Wikipedia is the famous one, both loved and hated. Simon Willison has a good overview of other useful wikis and a description of the technology involved.
It's not just Wikipedia any more; there's also Wiktionary (a multi-lingual dictionary), Wikibooks (developing open content books on various topics), Wikiquote (quotations), Wikisource (a repository of public domain source texts), Wikispecies (a biological species database), Wikicommons (free images and other media) and Wikinews (a new Wikipedia-style news site). Not to mention the huge numbers of projects in other languages.
Posted by Tom on January 11, 2005