Can use templates to give total control of the way the pages look. Unlimited templates for different pages or actions. Template tags capable of including other pages or arbitrary content.
Can use Rewrite, so that URLs look clean and like a normal website.
Can cache HTML pages so that normal viewing is speeded up
Minimal disk usage by sending backups to the wikimaster by email.
Suitable for, and easy to install on a rented virtual server.
Small (single file) and simple to maintain/improve.
Easy to run within a simple wrapper to add such things as access control
Minimal, intuitive mark-up suited to a non-technical audience (e.g. line-breaks are honoured).
First and foremost to PikiPiki, a wiki engine by MartinPool. This was a big inspiration, and my WikiParser is a very recognisable descendant.
The good people on the tutor mailing list at python.org, for their help on various occasions.
(Not to be confused with InfiniteMonkey.)
The site cited above has some interesting exploration aids that are worthy of emulation. I particularly liked its implementation of like pages. -- WardCunninghamI can't tell you how much it means to me to hear words of approval of my efforts from 'Mr Wiki' himself! Thanks for that, and sorry for grovelling!! -- BarnabyScottCategoryWikiImplementation