It's a setting in the wiki. Click and done. That said, I'm not an admin, so I can't turn it on.
Ryan Hackel <deeplogic@xxxxxxxxxx> wrote:
It's time the IceWiki got serious about spam. It is exhausting fighting 10 spam edits per day (http://icehousegames.org/wiki/index.php?title=Special:Log/delete). We've tried an external link blacklist, a whitelist, and have limited edits to registered users. Now I insist that we go one step further. Admins must approve new user accounts. I don't know how to implement this, but I'm hoping you do. If anybody else on this mailing list can teach me how to do this, I welcome your advice.
Your friendly neighborhood IceWiki admin,
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