everyone is the wiki moderator, if someone dicks up a page, go into revisions and fix it. Honestly, there is not much besides scripted spammers that can damage a wiki.
Yea, it's well executed, but seems overly generic. Spruce it up a bit with small props or damage, things to catch the eye, and guide it through the space.
Oh no anonymous is temporarily slowing down or briefly stopping websites that nobody goes to for a short period of time with no permanent damage. That'll learn'em.