SLJ | Which wiki for you?

School Library Journal reviews some of the wiki software available for free or low price.
PBwiki
Wikispaces
Wetpaint
Are all highlighted.

Don't know what a wiki is? Wikipedia explains it as

...A website that allows visitors to add, remove, and edit content. A collaborative technology for organizing information on Web sites, the first wiki (WikiWikiWeb) was developed by Ward Cunningham in the mid-1990s. Wikis allow for linking among any number of pages. This ease of interaction and operation makes a wiki an effective tool for mass collaborative authoring. Wikipedia, an online encyclopedia, is one of the best known wikis.

So for what reason could a library use a wiki? Well...in the most recent American Libraries Meredith Farkas talks about Wikis as a way to create bibliographies.

At my work we are playing around with PBwiki for a few projects - including reevaluating training issues, experimenting with "2.0 technologies", developing special group outreach, and other items. I've found that if someone is just willing to sit down and play for 5 minutes they can easily add content -- and with a brief training session they can use the advanced functionality with confidence. PBwiki is a great gateway to introducing people to html and other public web publishing concepts because they can easily switch back and forth between WYSIWYG and Source code interface. Another reason I like PBwiki is that you can incorporate a lot of the Google addons -- oh and it works very well with 30boxes calendar functionality.

If you visited the OLA conference in 2006 you know the IT roundtable had several suggestions for Wikis in their poster presentation(ppt)-- ideas included

Book discussion group
Teen group activities
Library & community events calendar
High tech “vertical file” for local information
Reference Desk handouts
Staff training
Library policy manual
Professional networking (http://www.libsuccess.org/)

So -- for what is your library using wikis? Tell me here in the comments or shoot over to the OkieLibrarians Ning network and share with us all!