Google Wiki
Google has just launched a wiki on their applications platform. The idea behind it is to make the creation and editing of wikis much easier. There is a downside however. To use Google sites you must be signed up for Google apps which you need to do as a company. Below is the direct link to the entry on the Web Worker Daily Blog regarding Google sites. Go check it out and see what you think!
http://webworkerdaily.com/2008/02/27/google-sites-finally-launches/#more-1827