Pure Wiki Deletion (page blanking creates redlinks)
Handling deletion on wikis is delicate, since it renders user generated content hidden from the user and the world. Wikipedia handles this poorly, but their users did come up with a beautiful solution (which never got implemented):
Links to blank articles will appear the same as links to non-existent articles
This removes a large part of the need for administrator intervention (providing some barrier to detached bureaucracies forming, and giving editors the power to remove their own content from view without requesting admin intervention), while making deletion transparent, open, and reversible. The normal deletion mechanism would stay, but only be used for illegal or banned content. The page linked has detailed reasoning about pros and cons.