Hi! I've just setup a copy of Tiki 18.104.22.168 on an old PC at home. There are an incredible number of features, so it will be a little while before I let my site go beyond my home network. It looks like it will be fun to use.
I've enjoyed using other wiki's (Primarily the Portland Pattern Repository at http://c2.com/cgi/wiki?WelcomeVisitors). I wanted to setup a website that had some usefule features, as well. When I saw Tikiwiki at sourceforge.net, I had to give it a try.