[CentOS] [OT?] recommendation for simple wiki S/W to run on centos 5.4?

any testimonials for some simple wiki software to run on centos 5.4 on an intranet? all i'm after is something uncomplicated that (ideally) yum installs, and that others can start using to start sharing useful info, nothing more. thoughts?

rday --

======================================================================== Robert P. J. Day Waterloo, Ontario, CANADA

Linux Consulting, Training and Kernel Pedantry.

Web page: http://crashcourse.ca Twitter: http://twitter.com/rpjday ========================================================================