We've begun to get a few trolls. Probably we'll have a few more by the end. I intend to convert the front page (WikiFur Central) into templates and protect it from direct editing at some point, which should help with that.
What are templates? Well, they're bits of wiki text that you can put into pages. It means users can't edit the actual page, only its sections, and only if they know how to get to the templates. This is a reliable method of frustrating most casual vandals. If this happens, and if you need to edit the main page and don't know how, let me know.