Please note that the Community user now automatically deletes all questions meeting the following criteria network wide:
Enable automatic deletion of old, unanswered, zero-score questions after a year?
- less than (question age in days * 1.5) views
- 0 score or lower (or a score of 1 with a deleted owner)
- no answers
- 1 comment or less
- asked more than 365 days ago
This is in addition to deleting unanswered, negatively voted questions with zero answers after 30 days, which has been in place for a while.
Since the Community user is considered a moderator, it isn't possible for post authors to undelete posts that have been autodeleted in this manner, so they'll have to flag.