UseModWiki - The simplest way to start a Wiki.

I came across this article on NewsForge titled 'Introducing UseModWiki'. According to which, its a 63 KB tar file which consists of a primary perl script and a few other related files. The installation just consists of placing the main script in a suitable place on the server. The main advantage is that UseModWiki does not require a database. All the data is kept in flat files.