bad tumblr id
Used for when any Tumblr post or picture are no longer publicly available.
Do not use this tag if a reblog is used as a source for the post. When this tag is on a post, it implies the source listed on the post is Bad ID. If a reblog is used, use third-party source instead.
Other Tumblr errors
See also
This tag implicates bad_id (learn more).