If you would like to read more about Wikis, the following materials may be helpful:

Library 2.0 and Beyond - Innovative Techonologies and Tomorrow's User - edited by Nancy Courtney

     ISBN: 9781591585374.

Putting Wikis into Play by Rachel Singer Gordon and MIchael Stephens published in

     Computers in Libraries (February 2007), p. 42-43.

Using  Blogs, RSS, and Wikis As Professional Resources by Beth Saxton published in

     Young Adult Library Services/YALS (Winter 2008), p. 27-29.

Wikis in Libraries - by Matthew M. Bejune published in

     Information Technology and Libraries (September 2007), p. 26-38.

Wiki While you Work by Darlene Fichter with Jeff Wisniewski published in

     Online (May/June 2008), p. 55- 57.   

If you would like to explore how Wikis are useful to libraries, you might find these web sites useful:

Coming Together Around Library 2.0 - an article about libraries using disruptive technologies, by Paul Miller http://www.dlib.org/dlib/april06/miller/04miller.html

Using Wikis for Instruction  http://instructionwiki.org/Main_Page

Using Wikis to Create Online Communities  http://www.webjunction.org/social-software/articles/content/438229

Welcome to Library Wikis - Matthew M. Bejune's website - http://librarywikis.pbwiki.com/

 Wikis used by libraries, or librarians, are also available and listed with descriptions.  Just follow the link.

If you would like to explore who provides hosted Wikis and the differences in Wikis, look at:

http://en.wikipedia.org/wiki/List_of_wiki_software - YES a wiki itself!!