My wiki has been vandalized 4 times now, and I was wondering if there was a way to make it, so that only registered users can edit the wiki. I am getting annoyed by people who think it is a good idea to vandalize my wiki.
Dragonite115 didn't actually post a link to their wiki so this isn't advertising.
To answer your question, no. The only reason SFW is registered users only is because of COPPA regulations. Wikia staff marked this wiki as one of the wikis where there are many young users. As such it is protected from anonymous editing to help prevent underage edits. Not that it really helps, but this is how it is.