Any script which automatically participates on a Wiki (or WardsWiki in particular). I'm excluding read-only scripts like FilteredRecentChanges, etc... to qualify as a WikiBot a script/program must modify (or attempt to modify) WardsWiki.
Unfortunately, most such programs have been put to questionable or outright obnoxious purposes. Examples:
Numerous spam-bots that automatically post WikiSpam.
WikiPageProtectionBots that periodically check if a page has been deleted or changed, and restore it to the version the bot author prefers (from an off-line copy).
UndoEditsByIpBots, designed to harass individual users by deleting indiscriminately their changes. A program of this type, but used to remove spam, has already been written and tested, so a script would also be possible. Some spammers seem to be using similar methods for selective spamming of this wiki.
WikiWipeoutBots?, which try to delete or destroy all Wiki content.
FantabulousBots, which do anything you can imagine... and worse. I once saw such a bot argue insistently against StaticTyping! Evidence? Or is this just flippancy?