User blog comment:Jacky 50A/Abandoned Wikis?/@comment-5691231-20140207092806

Many users are already aware of wikis being "abandoned" by their original founders — one user also posted a blog about it, and it became a (pretty unique) project.

If you are really interested in restoring a wikis activity, you should actively edit it--and if all admins are inactive, you could adopt it--and lastly you can add your wiki here (should you decide to adopt the wiki(s)).