With only a few exceptions, anyone can change, edit or add to any page in the Wiki, quickly and simply.
This particular Wiki is set up for the WaikatoLinuxUsersGroup
The PhpWikiDocumentation offers this advice.
You and I will find these statements there particularly relevant:
In addition to being quick, this site also aspires to Zen ideals generally labeled WabiSabi. Zen finds beauty in the imperfect and ephemeral. When it comes down to it, that's all you need.
The Universe tends toward chaos. The Universe tends toward Wiki.