Killed site
From YTMND
When a site either strongly violates YTMND's Terms of Use or is an extremely horrible site, it may be killed by a moderator. As opposed to deleting a site, killing the site only locks it from public view, replacing it with the following message:
This YTMND has been Killed! A YTMND Moderator has killed this site for some reason. It isn't deleted, you just aren't allowed to see it. This is usually done when there is an issue with the site either for breaking YTMND rules, legal reasons or sometimes if the sites just plain suck. If this is your site and/or you feel this this has been done in error, please feel free to email support@ytmnd.com with the site domain in the subject.
There was noted controversy over a large number of YTMND pages depicting pornographic images which were not killed. It was not definite whether the vast amount of these YTMNDs have caused an inability to go around killing them all, or some other reason.
Bypass
While it was impossible to view a site that was killed, it was still possible to access its profile and assets by clicking the "?" next to its title.
Sites now cannot be killed. Sites have stopped being killed around fall 2006.