Thread:Merrystar/@comment-5632187-20130311220405/@comment-11001-20130312025006

Hi. You cannot do that yourself, however it is possible to change the settings on a wiki to only permit logged-in editors. We discourage this as it can potentially harm a wiki's growth; many people "try out" editing before they make an account so you might lose those contributors.

But if you feel you have a legitimate need, then start a community discussion about it; if everybody agrees go ahead and write to Special:Contact with your request.