User blog comment:MatatakiVillageNerd/Announcement/@comment-20644-20100108031143

The only time you can actually tell someone on a wiki that they can't edit your work is if you're on a fanon/fan fiction wiki (or something else similar to that) that has its own editing policy/guidelines specifically saying that people can't do that.

If there's not a policy like that, you don't have a copyright over your articles and you're on a public wiki, so you can't tell other people they can't edit your work.