Most of my top search results from Duck Duck Go are pointing to closed "duplicate" questions. Many times those closed questions are higher quality, and have higher quality answers than the question that was kept. While I understand the need for housekeeping, I don't believe the process for marking duplicates is that effective at choosing the best question/...
Looks like a RemoveAbandonedClosed deletion; the Help Center says a question is deleted when
If the question was closed more than 9 days ago, and ...
not closed as a duplicate
has a score of 0 or less
is not locked
has no answers with a score > 0
has no accepted answer
has no pending reopen votes
has not been edited in the past 9 days