Evan-
MediaWiki is kinda hard to set up,
Bah - FUD, I say!
1) Download tarball
2) upload contents of tarball into directory on FTP server
3) Make directory tree server-writable
4) run config/ directory on webserver
5) Answer install questions
6) Copy LocalSettings.php to main directory
That's pretty much the same procedure as for any other LAMP application.
I'd say that something like UseMod is in fact at least as hard to install.
The difference is that MediaWiki offers some power features which make use
of external apps, none of which (with the exception of ocaml for math
support) are particularly exotic. But you don't need to enable any of
these features. So I see no good reason to advertise other wiki software
than our own.
Regards,
Erik