Wikis make for a great, simple, and accessible publishing and content management platform.
The editing process/workflow is as simple as can be, and the editing syntax can be learned by non-techies in a snap.
For examples of JSPWikis used as content management for public corporate web sites, I know at least two places :
- my company http://www.nexb.com
- and ebu's http://www.basen.net
(he is, after all, a JSPwiki comitter!)