After looking at the PersonalWiki page and downloading some of the wikis, DanParks decided he could do more with less. So he sat down and hacked out some Perl code...and ended up with sk, a (very) simple wiki.
sk's claims to fame are:
resizable textareas! - editing has never been so easy
WikiWords are the only syntax - everything else is plain text or your own HTML
few dependencies - you don't need anthing more than the core Perl distribution, plus the page storage is on the filesystem
tested and working under multiple web servers (Apache, IIS, and even PWS to date)