I have only just started using PmWiki a few weeks ago 20040912. I was looking for a wiki easy to install and customize ... PmWiki rocks.
I use wikilog a fair bit (suggested a few pacthes to the code so it handles wiki farming better).
Thinking of using mimeTex because an equation in a web page makes you look so damn smart it is not funny ;).
EuGeNe - eugene at boardkulture dot com